Question
There are 16 taps which are fitted in a tank .In
which some are inlet pipes and some are Outlet pipes .Each inlet tap has the efficiency to fill the tank in 12 hours and each outlet tap can empty the tank in 8 hours .If all the pipes are kept open when the tank is full it will take exactly 8 hours for the tank to empty. Then find how many of these are inlet pipes?Solution

What is the position of P with respect to her sister?
Six persons are sitting in two straight rows, facing north. Their names are A, B, C, D, E and F. A and F are sitting at diagonally opposite ends. B is i...
Which of the following statement is not true before the final arrangement?
Which of the following statements is definitely false?
Six friends are sitting in a straight line. E is 4th from the right. E is between B and D. A is adjacent to B. D is adjacent to C. D is between E and C....
Five friends, D, E, F, G and H, are sitting in a straight line. D and E are adjacent to each other. E is between D and F. D is third to the left of G. G...
Who among the following person sits fourth to the left of G?
What is the position of F with respect to H?
Who among the following person sits opposite to H?
X has tuition centre in which place?