PFA,
Plz help me out with detail explanation , i knw the answer , interested in explanation , so i come to knw where i am wrong..
TIA.:nono:

The 22nd problem,

after disc, SP = 0.9MP
MP = SP/0.9
1.17CP = 0.9MP = SP
MP = 1.17CP/.9
Profit% =( (MP-CP)/CP)*100
= 30 %(MP = 1.17CP/0.9):)

Moderate problem of Time,Distance ,Speed Q(2
Shramjeevi Express leaves Patna for New Delhi at 10:10 am and reaches New Delhi at 3:30 p.m. Magadh Express leaves New Delhi at 9:48 a.m. and reaches Patna at 2:36 p.m.If routes of both the trains are the same, then at what time will the trains meet each other?
(a) 12:52 p.m. (b) 1:12p.m. (c) 1:32 p.m. (d) none of these..
plzzz help:banghead::banghead:

Hi,
The 4th problem,
CP = 375;
SP=0.8*375, as it is sold at a loss of 20%.
CP as % of its SP = (375 / (0.8*375))*100 = 125%

PFA,
Plz help me out with detail explanation , i knw the answer , interested in explanation , so i come to knw where i am wrong..
TIA.:nono:

actually i guess i did a mistake in step:

9.48 am + 2hrs 42 mins -> 12.54 am

it shud b 12.30 am

so ur approach is also right.

do u hav the actual answer of this question?

distance left = (133/3)
therefore time when they will meet = (133/(3*(10+9)))
where 10+9 = relative speed
they will meet after 2 hrs 20 mins after shramjivi starts off
therefore at 12:30
10:10 + 2hrs 20 mins...Am I correct plzz tell

Two persons A and B are standing diametrically opposite on a circular track of radius 3.5 units. They start running in an opposite direction on the circular track with speeds 4 units/min and 7 units/min resp. on meetin each other they take rest of half minute and start running with twice the orginal speed. In five min, how many times will they take rest together?

(a) 6 times
(b) 7 times
(c) 10 times
(d) None of these

I got answer as (a) 6 times , however, answer given in book is (d) none of these. Could any one provide right answer and solution to this problem?

hdd Says

why did you take LCM of 16 and 24?

Moderate problem of Time,Distance ,Speed Q(2
Shramjeevi Express leaves Patna for New Delhi at 10:10 am and reaches New Delhi at 3:30 p.m. Magadh Express leaves New Delhi at 9:48 a.m. and reaches Patna at 2:36 p.m.If routes of both the trains are the same, then at what time will the trains meet each other?
(a) 12:52 p.m. (b) 1:12p.m. (c) 1:32 p.m. (d) none of these..
plzzz help:banghead::banghead:

Pls help...

4)N! is having 37 zeroes at its end. How many values of N iss possible?

I second u.

But to my agony I find a lot of printing mistakes and wrong ans, altho i have done only a few chapters until now.

how many triangles can be formed by joining 12 points of which
7 are co linear
exercise 1... page 39

solutions::
a. 2 points from 7 colinear and one from non colinear gives 7c1 x 5c1 and 2 from non colinear and one frm the colinear :: 6c1 x 7c1 and 3 from all non collinear
:: = 7c2 x 6c1 + 7c1x6c2 + 6c3 =261

b. 12c3 - 7c3 (solution given )
= 185

did i go wrong in solution a?:nono:

how many triangles can be formed by joining 12 points of which
7 are co linear
exercise 1... page 39

solutions::
a. 2 points from 7 colinear and one from non colinear gives 7c1 x 5c1 and 2 from non colinear and one frm the colinear :: 6c1 x 7c1 and 3 from all non collinear
:: = 7c2 x 6c1 + 7c1x6c2 + 6c3 =261

b. 12c3 - 7c3 (solution given )
= 185

did i go wrong in solution a?:nono:

Originally Posted by rahul005
A train travelling at 36 kmph crosses a platform in 20 sec and a man standing on the platform in 10 seconds.What is the length of the platform in metres?

a)240 m b)100 m c)200 m d) 300 m....pls show the entire process.

Q. what is the unit digit of 2^3^4^5?
My answer is coming 6 but correct answer is two. please help.

Originally Posted by rahul005
A train travelling at 36 kmph crosses a platform in 20 sec and a man standing on the platform in 10 seconds.What is the length of the platform in metres?

a)240 m b)100 m c)200 m d) 300 m....pls show the entire process.

Nishit sinha is a really nice book and has good questions.

Even theory part is also well written. Go for It.

i have already solved questions from TIME booklet... Arun sharma has many questions wrong and some has data missing..
also - TIME faculty says its a good book (compilation of good questions) but it's never revised.

so is it advisable...
i m planning to buy nishit sinha

Question; In a party, all invitees are distributed tags, labelled with consecutive numbers starting from one. At the end of the party, chocolates were distributed such that the invitee with tag labeled one got one chocolate, the one with a tag labelled two got two chocolates and so on. One of them got the chocolates twice. The total number of chocolates that were distributed was 1200. If each of them got exactly one tag then what was the tag number of invitee who got the chocolate twice?

Option; 1.)35 2.) 28 3.) 24 4.) 21 5.) 48

nits2811 Says

yes its a gud buk...but if u r weak den i wld advise u to go thru class 9th nd 10th ncert buks...den do arun sharma...dat shld b more den enough...coz level of CAT is very basic in its onlne version...70% of the paper was pure basics in 2011...

is nishit sinha a good book to buy...
i m weak in maths... i already have arun sharma

Im no good at quants. Been 9 years since i last solved or atempted to solve a math problem. all i have is the TIME material. Is that enough or should i go for Books by Arun Sharma and Nishit Sinha.

Would appreciate it if one of the seniors answered this query. Thanks in advance!

Originally Posted by rahul005
A train travelling at 36 kmph crosses a platform in 20 sec and a man standing on the platform in 10 seconds.What is the length of the platform in metres?

a)240 m b)100 m c)200 m d) 300 m....pls show the entire process.

Q. what is the unit digit of 2^3^4^5?
My answer is coming 6 but correct answer is two. please help.

U can not download this book , however U can browse some of the pages of this book from here -

The Pearson Guide to Quantitative Aptitude for CAT 2/e - Sinha - Google Books

sumitrawal1629 Says

Can anyone provide me with the link where i can download this book??

vivekkahn Says

Probably wat u can do is post the link for this thread on the Quant thread and let the ppl know tat u guys wud be discussing questions from Nishit Sinha on this dedicated thread... This wud atleast ensure tat regulars from tat thread are aware of the existence of this thread..meanwhile continue with ur discussions on this thread, if u reach a deadend wrt some problem, they u can choose to post it on the official quant thread to get the help of puys there...

I can send you the scanned copies..................
PM me your email address.........

Hi,
I have bought a book "The Pearson Guide to Quantitative Aptitude for the CAT" by Nishit K. Sinha. But the pages 241-248 and 265-272 are missing in the book. I have already started using the book. Also, I do not have anybody who has bought the same book. So, is it possible to send the xerox/scanned copies of the same pages to me? It will be great help if you can please provide. Thanks in advance.
Awaiting for your reply.

Regards,
Kingshuk

Ratio Proportion

Difficulty Level : Moderate

Q.40. The square of the time taken by a planet to complete one revolution around the sun varies as the cube of its mean distance from the sun. If the ratio of the mean distance Mars and saturn from the sun is 16:3. FInd the number of days on saturn that are equal to a year on Mars.

(a) 4496 (b) 4294 (c) 5598 (d) 4696


I HOPE WE WILL SURELY RECEIVE SOME MORE QUALITY PROBLEMS FROM THE BOOK AND SOON THIS SET OF QUERY WILL BE RESOLVED!!!!

naga25french Says

answer should be 260 .. apply chinese remainder theorem

On 18th May, when my Maruti was showing a km reading of 4440, it stopped in the middle of the road because the petrol got over. I got down from the car and poured the 5 litres of petrol I had in a can with me. Then, on 25th May, when the km reading was 4474, I went to the petrol pump and got the petrol tank filled to the brim by putting 28 litres of petrol. On 7th June, my father-in-law filled up another 10 litres but he said that he did not remember the km reading of the car. On 11th June and 19th June, I got the tank filled completely when the km reading was 5139 and 5689 respectively-each time filling 25 litres. On 25th June, i.e. today, I again got the tank filled to the brim by putting 22 litres when the km reading was 6112.5. Petrol was always filled up first thing in the morning at the petrol pump next to my house.
Fuel efficiency of a car is defined as the number of kms the car gives per litre of petrol.

Q) What is the fuel efficiency of my car from 25th May to 25th June?

a) 19.97 km/Lt b) 18.67 km/Lt c) 14.97 km/Lt d)15.27 km/Lt

On 25th June, i.e. today, I again got the tank filled to the brim by putting 22 litres when the km reading was 6112.5.

its written that 22liters petrol it filled on 25th june when the reading was 6112.5 so the car is not driven with this 22lits of petrol.... and the 1st line is also not very simple... reconsider it carefully its not abt the flowery language...