X can do a piece of work in 30 days. He worked at it for 5 days and then Y finished it in 20 days. In how many days can X and Y together finish the work?
X’s five day work = 5/30 = 1/6 Remaining work = 1 – 1/6 = 5/6 This work was done by Y in 20 days. Y does 5/6th of the work in 20 days, he will finish the work in 20 × 6/5 = 24 days. X & Y together would take 1/24 + 1/24 = 2/24 = 1/12 i.e. 12 days to complete the work.
Find the greatest number that will divide 49, 147 and 322 to leave the same remainder in each case.
If the seven-digit number 52A6B7C is divisible by 33 and A, B, C are primes then the maximum value of 3A+2B+5C?
A number n when divided by 6, leaves a remainder 3. What will be the remainder when (n2 + 5n + 8) is divided by 6?
If the number 1005x4 is completely divisible by 8, then the smallest integer in place of x will be:
What is the number of divisors of 480?
What are the last two digits of 56283 x 141283 × 125254?
If 'N' is the greatest three-digit number which when divided by 27, 6, 8 and 9 Leaves in each case the same remainder of 5, then the sum of the digits o...
How many factors of 23 × 33 × 54 ×91× is divisible by 50 but not by 100?
The greatest number that will divide 398,436, and 542 leaving 7, 11, and 15 as remainders, respectively, is:
18 is divided into three parts which are in arithmetic progression (A.P.) in such a way that the sum of their square is 158. Find the square of the sum
