1. Four pipes can fill a reservoir in 15, 20, 30 and 60 hours respectively. The first one was opened at 6 AM, second at 7 AM, third at 8 AM and the fourth at 9 AM. When will the reservoir be... Read more

1.Twenty one times of a positive number is less than its square by 100. The value of the positive number is       (a) a) 25 b) 26 c) 42 d) 41 2.The smallest number, which should be added to... Read more

1.The average age of A, B and C is 26 years. If the average age of A and C is 29 years, what is the age of B in years ?  (B) A.  26 B.  20 C.  29 D.  23 2.a, b, cand d are four consecutive n... Read more

1.Complete the pyramid my replacing ? with the correct number.1.Complete the pyramid my replacing ? with the correct number. 1 1 1 2 1 1 2 1 1 1 1 1 2 2 1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ans:3 1... Read more

1.Which interchange of signs will make the following equation correct?    (D) (8 – 8) + 8 × 32 = 64 A. ×, +, – B. –, ÷, + C. +, ÷, + D. +, ÷,× 2.In the certain code language if ‘-... Read more

1.Niti and Diti can do a piece of work in 45 days and 40 days respectively. They began to work together but Niti leaves after ‘x’ days and Diti finished the rest of the work in (x + 14) days... Read more