Two men and a woman are entrusted with a task.The 2nd man needs 3 hrs more to cope with the job than the 1st man and the woman would need working together.The 1st man working alone would need as much time as the second man and the woman working together.The 1st man working alone would spend 8hrs less than the double period of time the second man would spend working alone.How much time would the 2 men and the woman need to complete the task if they all worked together?
A and B, working together, can build a wall, 221 m long, in 11(1/9) days. If they work on alternate days, with A starting the work, it takes 22 (1/4) days to build the same wall. If A and B work together and build a similar wall but of twice the length and earn a total of Rs.1800 for it, then B's share of the earnings will be?
A ninth degree polynomial when divided by x + 1 leaves a remainder of 2 and when divided by x - 2 leaves a remainder of 11. What is the remainder when the polynomial is divided by x^2 - x - 2?
1st 126 natural numbers are put side by side in the ascending order to create a large number N=123456........125126.What will be the remainder when N is divided by 5625 ?
There are 4 letters A, B, C, D that have to go in 4 envelopes addressed to a, b, c and don't respectively. In how many ways can the four letters be put in the 4 envelopes such that every letter goes into the wrong envelope?
Choices:
A) 20
B) 12
C) 9
D) 4
On a sum invested at a certain rate of interest, compounded annualy, the interest accrued in the first two years and that in the first three years were, Rs. 630 and Rs. 993 respectively. What was the rate of interest?