Please provide explanation also.
is there any way to find sum of a series if i know the general term?
A square shaped field has area 64516 sq. meters. An isosceles triangular portion is used for plantation, such that two adjacent sides of the square field are divided in the ratio 3:1 each. Find the area used for plantation.
a) 15231.125
b) 16129
c) 18145
d) 32257.125
PROBABILITY : Please let me know if my approach is right for this one... fell free to suggest any alternate time saving technique(s)
Q: Vishwanathan Anand & Gary kasparov play a series of 5 chess games. The probability that Anand wins a game is 2/5 & that of kasparov is 3/5. The series will be won by the person who wins 3 matches. Find the probability that Anand wins the series. The series ends at the moment when any of the two wins 3 matches
Choices: (a) 992 / 3125
(b) 273 / 625
(c) 1021 / 3125
(d) 1081 / 3125
...........................................................................................................
My Solution => Firstly, there is no probability of a draw as (2/5 + 3/5) = 1 , i.e. there must be one winner per game
Secondly, although the series will end as soon as someone has won 3 games, if all 5 games are played through regardless), whoever wins ≥3 games will be the winner, any way , so P(Anand wins series) = P(Anand wins ≥3) = sum 5Ck *0.4^k *0.6^(5-k), k = 3 to 5 = 0.31744 = 992/3125
A sum of Rs. 8000 was borrowed at 5% p.a. CI and paid back in 3 equal annual installments. What is the amount of each installment...
a) 2937.67 , b) 3000 , c) 2853.35 , d)2739.27
an amount 12820 due in 3 year hence is fully repaid in 3 annual installments. After 1 year, the first installment is 1/2 the second and second installment is 2/3rd of the third one. If rate of interest is 10% p.a. find the first installment.
a) 2400 , b) 1800, c) 2000, d) 2500
Explain in detail. plz dont mark ans...
Anybody has last 2 or 3 years mocks of CL and Time?
A lion walks for 1200 km in 70 days resting 9 hrs each day. If it has to 750 km ,resting 10 hrs each day and it also increases speed by 1.5 times , in how many days will he able able to cover the distance?
DO NOT HAVE OA..... APPROACH REQUIRED
- 33
- 31
- 31.25
- 30
0 voters
N=71421...98105112...189196
What will be the remainder when N is divided by 9?
The metro service has a train going from Mumbai to Pune and Pune to Mumbai every hour, the first one at 6 a.m. The trip from one city to another takes 4.5 hors, and all trains travel at the same speed. How many trains will you pass while going from Mumbai to Pune if u start at 12 noon?
- 9
- 13
- 10
- 8
0 voters
Two joggers left Delhi for Noida simultaneously. The first jogger stopped 42 mins later when he was 1 km short of noida and the other one stopped 52 min later when he was 2 km short of noida. If the jogger jogged as many kilometers as the second and the second as many kilometers as the frst, the frst one would need 17 mins less than second. Find the distance between delhi and noida.
- 25 km
- 15 km
- 5 km
- 35 km
0 voters
A motorboat went downstream for 28 km and immediately returned. It took the boat twice as long to make the return trip. If the speed of the river flow were twice as high, the trip downsstream and back would take 672 minutes. Find the speed of the boat in still water and the speed of the river flow.
ANY OTHER APPROCH APART FROM MAKING EQUATIONS
- 12,3
- 9,6
- 9,3 kmph
- 8,2
0 voters
What is the minimum value and at what value of x does |2x+5|+|5x-2| become minimum?
Can someone explain, how do we find last 2 digits of simple plain nos(and not factorials and powers) . Like, what will be the last 2 digits for 75X35X47X63X71X87X82 ? Following are the options:
- 50
- 70
- 90
- 30
0 voters
Total gadha pdf files (found the link on this thread)
https://drive.google.com/file/d/0B_dyFdgmflq6SXBBTmttS2RGNkE/edit?usp=sharing https://drive.google.com/file/d/0B_dyFdgmflq6VnE1aXZod2VCYXM/edit?usp=sharing https://drive.google.com/file/d/0B_dyFdgmflq6WXdmeDJzOGIyczg/edit?usp=sharing
Karthik borrows 24000 from a bank at 12%pa SI. He repays 20% of Principal end of every year. What is the SI that has to accrued for the first 4 years. (With explanation please)
What Annual Installment will discharge a debt of 1450 due after 5 yrs at 8% pa Simple interest?
Some children were standing in a circle. It was observed that the number of distinct pairs in which children were standing side by side was one-fifth of the number of distinct pairs in which children were not standing side by side. Find the number of children.
OPTIONS-
10
13
24
65
Fourteen machine can produce 500 units in 12 hours. After 4 hours of production, two more machines were started. How many more hours will it take to complete the production of 500 units.
a) 4
b) 5
c) 6
d) 7
A cistern can be filled separately by two pipes P and Q in 45 min and 35 min respectively. A tap R at the bottom can empty the full cistern in 30 min. If the tap R is opened 7 min after the two pipes P and Q are opened then after what time from the opening of pipe P and Q the cistern becomes full?
a) 40th min
b) 61st min
c) 37th min
d) none of these