MBA Exam

There is a tank of capacity 165 litres. it has N taps numbered from 1-N. At the start of the t^th minute where 1<_t<_N the tap numbered t which fills the tank at t litres/min is opened. If it takes exactly N min to fill the tank then find N?

1) 8
2) 9
3) 7
4) 10

Read Solution (Total 0)

MBA Other Question

A group of workers can complete a certain job in 9 days. But every alternate day starting from the second day, 2 workers are withdrawn from the job and every alternate day starting from the third day one worker is added to the group. When the job is finished, there is no worker left but it takes twice the time compared to the originally estimated time. What is the original number of workers.....??

1) 8
2) 10
3) 18
4) CBD
let Sm denote the sum of the squares of first m natural numbers.For how many values of m <100 , is Sm a multiple of 4 ?For how many values of m <100 , is Sm a multiple of 4Question: For the above question , for how many values will the sum of cubes of first m natural numbers be amultiple of 5 ( if m < 50 )?

1) 20
2) 21
3) 22
4) None of these