time and work shortcut
if A takes a hrs more than time taken by both A and B together , and B takes b hrs more than time taken by both A and B together, then the time taken by A and B together is root(a*b)
A biased dice is thrice more likely to show an odd number than show an even number. It is tossed twice. Find the probability that the sum of numbers in the 2 throws is even.
A locker at a famous bank can be opened by dialing a fixed 3 digit code(between 000 and 999). Dawood, a terrorist, only knows that the number is a 3 digit number and has only one six. Using this he tries to open the lock by dialing 3 digits at random. The probability that he succeeds in this ?
a person draws a card from a pack of 52 cards,replaces it and shuffles the pack.He continues doing this till he draws a spade.The probability that he will fail exactly the first two times is?
A person wishes to host as many different parties as he can so that each party has same number of friends. If he has 30 friends, what is the probability that a friend A would be found in a party he arranges?
good one
In how many ways 19 can be written as a sum of five odd numbers ?
iska aprroach b daal do
bhai any Quick tips to improve Quant score before CAT'15? or guys if possible please post a PDF of 100-200 Must-do-it Qs
The sum of distinct prime factors of 222222 is?
Q. What are the last two digits of the sum obtained by adding all the possible remainders of numbers of the form 2^n, n being a non-negative integer, when divided by 100?
No OA available. Please discuss in details !!
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5A(n+1) + 1 = 5*An + n. Given A5 = 55, find A55.
(n+1) is subscript
S is the region described by the following:
1. |x|
2. |y|
3. x > y
Find the Perimeter of the region formed by the intersection of S and the unit circle with center at (1,1)
1. 8
2. 4
3. between 1 and 2.75
4. between 2.75 and 4
1)A swimming pool is of length 50 m. A and B enter a 300 m race starting simultaneously at one end of the pool at speeds of 3 m/s and 5 m/s. How many times will they meet while travelling in opposite directions before B completes the race?
Mr. X, a very industrious person, wants to establish his own unit. For this he needs an instant loan of Rs. 5,00,000 and, every five years he requires an additional loan of Rs 100,000. If he had to clear all his outstandings in 20 years, and he repays the principal of the first loan equally over the 20 years, find what amount he would have to pay as interest on his initial borrowing if the rate of interest is 10% p.a. Simple Interest.
- Rs. 560,000
- Rs. 540,000
- None of these
- Rs. 500,000
- Rs. 525,000
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Largest term of the expansion (x+5)^20 is ?
OA: Dont know
PS: i am confused over CBD or 20c3*5^17*x^3
P=1111111.....1 (46 times)
Q=22222...222(65 times). What is the remainder when P*Q is divided by 18?
Please explain. The answer is 4
Coefficient of x^16 in the expansion (1+x+x^2+x^3+x^4)^6? Approach please
There are 6 people of different heights to be seated in 2 rows with 3 seats each so that the one just behind each is taller than one in front. Find the no. of ways?
Anyone here facing issues with time quant sectional test? im not able to access them ..its stuck at downloading..other sectional test are opening fine.
Guys, CAT has changed the calculator format. With new buttons added. You have any clue?