What is the next no. In below series?
1,11,21,1211,111221,?

1.312211
2.222211
3.311211
4.211211

ans : 3.311211

I guessed this one would be option five because the answer would be 12+a*sqrt(b) :sneaky:

And only option5, has that form. But is there a better way to do this? Something conceptual?


P.s. Encleadus = Saransh bhai? and Pkaman = faad pankaj kamani?

Yeah ... :-P

And you are THE Omkar Parab ? :)

Continue here :

http://www.pagalguy.com/forum/cat-and-related-discussion/80436-official-quant-thread-cat-2012-a.html#post3383653

may be coz,i'd found myself understanding the problem:)

but really thanks a lot for your effort..

Another Q from geometry:



OA:5


P.S : Good Night,And Good Luck

I guessed this one would be option 5 because the answer would be 12+a*sqrt(b) :sneaky:
12 because AE + ED = 12, and the other side would be a*sqrt(80)

And only option5, has that form. But is there a better way to do this? Something conceptual?


P.s. Encleadus = Saransh bhai? and Pkaman = faad pankaj kamani?

312211

OA kya hai ?

Bro aapne ek baar jo bol diya OA wahi hota hai.
Namaskaar pankaj bhai!!

Guys,

Please continue here ... :)

http://www.pagalguy.com/forum/cat-and-related-discussion/80436-official-quant-thread-cat-2012-a.html#post3383653

What is the next no. In below series?
1,11,21,1211,111221,?

1.312211
2.222211
3.311211
4.211211

It is 1. 312211

Concentrate on how the numbers are said,

What is the next no. In below series?
1,11,21,1211,111221,?

1.312211
2.222211
3.311211
4.211211

This is just counting the number of 1's and 2's.
3 times 1 then 2 times 2 then 1 time 1.
So, 312211.

What is the next no. In below series?
1,11,21,1211,111221,?

1.312211
2.222211
3.311211
4.211211

312211

OA kya hai ?

For the M:N wala question it should be 3:2 as explained by arumugudas I think.

What is the next no. In below series?
1,11,21,1211,111221,?

1.312211
2.222211
3.311211
4.211211

devanshu97 Says

A and B pick up a ball at random from a bag containing M red and N yellow colored balls one after the other replacing the ball everytime till one of them gets red ball. The first one to get a red ball is declared the winner. If A begins the game and odds in favor of his winning the game are 3 to 2, then find the ratio of M:N

i might be wrong ....

i am trying because u asked ........ask jain bhai or varun thaygi ..........

odds in favour = p(E)/p(E') =3/2


its written who gets the red ball will win so winning for A is 3/x and and not winning is 2/x ...here wat is x total no of balls 3 red and 2 yellow ie 5 balls

since the balls are replaced before every draw it remains 5

so M:N =3:2

tell me the ans ...check pls:)

sumit99 Says

Gr8 move u gt it nice. M on mobile bhai u r absolutely ri8,by the way hw u got that i m on mobile.

may be coz,i'd found myself understanding the problem:)

but really thanks a lot for your effort..

Another Q from geometry:



OA:5


P.S : Good Night,And Good Luck

sumit99 Says

A father and his son starts at a pt. A wid speeds 12kmph and 18kmph and reach another pt. B. If his son starts 60 min. After his fathet at A and reaches 60 min earlier than his father. Wat is the distance between A and B.

12*(x+2) = 18x

24 = 6x
x=4

D=72

sumit99 Says

A father and his son starts at a pt. A wid speeds 12kmph and 18kmph and reach another pt. B. If his son starts 60 min. After his fathet at A and reaches 60 min earlier than his father. Wat is the distance between A and B.

the question says father has to travel 2 hrs more than son

diff between their speed is 6 km

so 6*4 = 24 km which will make the father to travel two hrs more


so 18*4 = 72 km

Yeah,u're right

Son gains 6km over the father for an hour

Father has gained 12 km before the son starts

To catch up w/ father,the sons travels for 2 hrs,and again he has to take 12 Km lead so that father would travel for another one hour

so,the son has to travel for 4 hrs,so the distance is 72 km

P.S: seems u're on mobile:)

Gr8 move u gt it nice. M on mobile bhai u r absolutely ri8,by the way hw u got that i m on mobile.

devanshu97 Says

A and B pick up a ball at random from a bag containing M red and N yellow colored balls one after the other replacing the ball everytime till one of them gets red ball. The first one to get a red ball is declared the winner. If A begins the game and odds in favor of his winning the game are 3 to 2, then find the ratio of M:N

Any1..try this

d=18(t-2)=16t
d=288km

Again wrong ans. Bro but nw plz see the units n m sure u will get the correct ans.

sumit99 Says

A father and his son starts at a pt. A wid speeds 12kmph and 18kmph and reach another pt. B. If his son starts 60 min. After his fathet at A and reaches 60 min earlier than his father. Wat is the distance between A and B.

sumit99 Says

Mani bhai ur ans. Is wrong ,check again and try to judge the siphony of units here.

Yeah,u're right

Son gains 6km over the father for an hour

Father has gained 12 km before the son starts

To catch up w/ father,the sons travels for 2 hrs,and again he has to take 12 Km lead so that father would travel for another one hour

so,the son has to travel for 4 hrs,so the distance is 72 km

P.S: seems u're on mobile:)

(

sumeet1489 Says

Two boats start towards each other, from the two points exactly opposite of each other on the opposite banks of a river, simultaneously. They meet at a distance of 410 m from one of the banks and continue sailing further till they reach the opposite banks. They take rest for 1 hr each and start off the return journey taking the same route. Now they meet at a distance of 230 m from the other bank. Find the distance between the two banks. (Assume that river water is still.)

you need two equation to solve this type of question

time taken to meet first time is same ....using this one equation can be formed

let distance be X

x-410/410=s1/s2

time taken to meet second time can be used to form second equation

note : ignore rest taken 1 hrs (because each take 1 hr rest)

equate the total distance traveled

(x-410+410+x-230)/(410+x-410+230)=s1/s2

i2e 2x-230/x+230=s1/s2



equating two equations

u get 2x-230/x+230=x-410/410


u get X=1000

sumit99 Says

A father and his son starts at a pt. A wid speeds 12kmph and 18kmph and reach another pt. B. If his son starts 60 min. After his fathet at A and reaches 60 min earlier than his father. Wat is the distance between A and B.

d=18(t-2)=16t
d=288km

mani0303 Says

Total distance should be 48km

Mani bhai ur ans. Is wrong ,check again and try to judge the siphony of units here.

At Supersonic Corporation, the time required for a machine to complete a job is determined by the formula:

t= root w + root w-1

where w = the weight of the machine in pounds and t = the hours required to complete the job. If machine A weighs 8 pounds, and machine B weighs 7 pounds, how many hours will it take the two machines to finish one job if they work together?


Koi isko bhi solve kar do ? Full explanation

unit of work done in 1 hour=1/t
total work done by A and B in 1 hour=1/(_/8+_/7) + 1/(_/7+_/6)
=>_/8-_/6
total time =1/(_/8-_/6)
=>(_/8+_/6)/2

sumit99 Says

A father and his son starts at a pt. A wid speeds 12kmph and 18kmph and reach another pt. B. If his son starts 60 min. After his fathet at A and reaches 60 min earlier than his father. Wat is the distance between A and B.

Total distance should be 48km

A father and his son starts at a pt. A wid speeds 12kmph and 18kmph and reach another pt. B. If his son starts 60 min. After his fathet at A and reaches 60 min earlier than his father. Wat is the distance between A and B.

A and B pick up a ball at random from a bag containing M red and N yellow colored balls one after the other replacing the ball everytime till one of them gets red ball. The first one to get a red ball is declared the winner. If A begins the game and odds in favor of his winning the game are 3 to 2, then find the ratio of M:N

At Supersonic Corporation, the time required for a machine to complete a job is determined by the formula:

t= root w + root w-1

where w = the weight of the machine in pounds and t = the hours required to complete the job. If machine A weighs 8 pounds, and machine B weighs 7 pounds, how many hours will it take the two machines to finish one job if they work together?


Koi isko bhi solve kar do ? Full explanation

84 ways

Three ways -

1) BBB , BBB, WWW

Arranging these three set of marbles in three rows = 3

2) BBW , BBW , BBW

Arranging these three set of marbles in three rows = (3!/2!)*(3!/2!)*(3!/2!) =27

3)BWW , BBW , BBB

Arranging these three set of marbles in three rows = 3!*(3!/2!)*(3!/2!)*(3!/3!) = 54

Total arrangements = 54 + 27 + 3 =84

P.S: please share the OA for your previous question

dont have answers for some question...so verifying my answers here...:)

Two boats start towards each other, from the two points exactly opposite of each other on the opposite banks of a river, simultaneously. They meet at a distance of 410 m from one of the banks and continue sailing further till they reach the opposite banks. They take rest for 1 hr each and start off the return journey taking the same route. Now they meet at a distance of 230 m from the other bank. Find the distance between the two banks. (Assume that river water is still.)

devanshu97 Says

Find the number of ways u can fill 3*3 grid(with 4 corners a,b,c,d) if u have 3 white marbles and 6 black marbles.

84 ways

Three ways -

1) BBB , BBB, WWW

Arranging these three set of marbles in three rows = 3

2) BBW , BBW , BBW

Arranging these three set of marbles in three rows = (3!/2!)*(3!/2!)*(3!/2!) =27

3)BWW , BBW , BBB

Arranging these three set of marbles in three rows = 3!*(3!/2!)*(3!/2!)*(3!/3!) = 54

Total arrangements = 54 + 27 + 3 =84

P.S: please share the OA for your previous question

devanshu97 Says

Find the number of ways u can fill 3*3 grid(with 4 corners a,b,c,d) if u have 3 white marbles and 6 black marbles.

Arrange any of the white or black marbles and the other would get arranged automatically.
It would be C(9,3) or C(9,6) = 84.

Find the number of ways u can fill 3*3 grid(with 4 corners a,b,c,d) if u have 3 white marbles and 6 black marbles.

1200 basic salary is fine...

see the qn.. i says for every sales of 10,000 and above he gets 50% of basib AND 10% of sales amount.
so take 10,000 out of 50,000. cos first 10,000 doesn come under incentives.
rem is 40,000. four times sales of 10,000.
so that gives 4 times 50% basic. 4 * 600 =2400
plus
4 times 10 % of 10,000 = 4000

total = 1200 + 2400 + 4000 = 7600

you are not considering the 50% of basic pay also for every sales of 10,000 and above,,.. thats were u go wrong.. qn clearly says AND.

Thanks karthik.....really helpful!!!

Instead of 33600,the watch would have covered only 33558

=>33600 - 33558

=> 42

still it's lacking by (42*6)/10 = 25.20 mins

the current time would have been 11:34:XX AM


P.S:PG has given me the courage to attempt the question from time for the first time:)

is it 11:34:48a.m.
loosing 25 minutes 12 seconds total
but not so good at clocks

Sorry guys, dont hv the Oa.

yes 50000 is right.....how did you get that?

Going by 50000, salesman will earn 1200(basic salary) + 4000(10 % of 40000) +600=5800....

Can you explain me my error?

1200 basic salary is fine...

see the qn.. i says for every sales of 10,000 and above he gets 50% of basib AND 10% of sales amount.
so take 10,000 out of 50,000. cos first 10,000 doesn come under incentives.
rem is 40,000. four times sales of 10,000.
so that gives 4 times 50% basic. 4 * 600 =2400
plus
4 times 10 % of 10,000 = 4000

total = 1200 + 2400 + 4000 = 7600

you are not considering the 50% of basic pay also for every sales of 10,000 and above,,.. thats were u go wrong.. qn clearly says AND.

Hey Guys, Please help me answer this basic question of Arun Sharma

A salesman is appointed on the basic salary of Rs 1200 per month and the condition that for every sales of Rs 10000 and above Rs. 10000,he will get 50% of the basic salary and 10% of the sales as a reward.This incentive scheme does not operate for the first Rs 10000 of sales.

What should be the value of the sales if he wants to earn Rs. 7600 in a particular month?

a)Rs. 60000 b)Rs. 50000 c) Rs. 40000 d) None of these

50% of basic sal = 600.
10% of sales on each 10k = 1000.
=> 1600 in all.
He got 7600 in total.
As 1200 is his fixed pay, so he got 7600 - 1200 = 6400.
So, 6400/1600 = 4. So, he must have earned 10k 4 times to get this much. But as it was not to be counted for first 10k, so total is 50k.

yes 50000 is right.....how did you get that?

Going by 50000, salesman will earn 1200(basic salary) + 4000(10 % of 40000) +600=5800....

Can you explain me my error?

It's Option d) none of these

he would have earned 1200 + 600 once he crossed the Rs.10000 sales

but still he needs 5800 to meet his target,and that can be earned from 10/100*(58000),but sales amount Rs.58000 not in the option

Let x be the number of times he shows the sales above 10,000.

so his incentive everytime will be 600 + 1000 = 1600
where 600 is 50 % of basic salary and 10% of 10,000 is 1000.

1200 + 1600x = 7600
=> 1600x = 6400
=> x = 4.

so no of times he shud show his sales above 10,000 is 4.
but to get 7600 he has to show sales of 50,000 cos the first 10,000 doesn include the incenives..

hope am clear.
correct me if am wrong.

Hey Guys, Please help me answer this basic question of Arun Sharma

A salesman is appointed on the basic salary of Rs 1200 per month and the condition that for every sales of Rs 10000 and above Rs. 10000,he will get 50% of the basic salary and 10% of the sales as a reward.This incentive scheme does not operate for the first Rs 10000 of sales.

What should be the value of the sales if he wants to earn Rs. 7600 in a particular month?

a)Rs. 60000 b)Rs. 50000 c) Rs. 40000 d) None of these

It's Option d) none of these

he would have earned 1200 + 600 once he crossed the Rs.10000 sales

but still he needs 5800 to meet his target,and that can be earned from 10/100*(58000),but sales amount Rs.58000 not in the option

Hey Guys, Please help me answer this basic question of Arun Sharma

A salesman is appointed on the basic salary of Rs 1200 per month and the condition that for every sales of Rs 10000 and above Rs. 10000,he will get 50% of the basic salary and 10% of the sales as a reward.This incentive scheme does not operate for the first Rs 10000 of sales.

What should be the value of the sales if he wants to earn Rs. 7600 in a particular month?

a)Rs. 60000 b)Rs. 50000 c) Rs. 40000 d) None of these

Let x be the number of times he shows the sales above 10,000.

so his incentive everytime will be 600 + 1000 = 1600
where 600 is 50 % of basic salary and 10% of 10,000 is 1000.

1200 + 1600x = 7600
=> 1600x = 6400
=> x = 4.

so no of times he shud show his sales above 10,000 is 4.
but to get 7600 he has to show sales of 50,000 cos the first 10,000 doesn include the incenives..

hope am clear.
correct me if am wrong.