1. The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is (2)
(a) 1
(b) 2
(c) 3
(d) 4
2. Two equal vessels are filled with the mixture of water and milk in the ratio of 3:4 and 5:3 respectively. If
the mixtures are poured into a third vessel, the ratio of water and milk in the third vessel will be (2)
(a) 15: 12
(b) 53: 59
(c) 20: 9
(d) 59: 53
3. I am three times as old as my son. 15 years hence, I will by twice as old as my son. The sum of our ages is (3)
(a) 48 years
(b) 60 years
(c) 64 years
(d) 72 years
4. Three bells ring simultaneously at 11 a.m. They ring at regular intervals of 20 minutes, 30 minutes, 40 minutes respectively.The time when all the three ring together next is (2)
(a) 2 p.m.
(b) 1 p.m.
(c) 1.15p.m.
(d) 1.30p.m.
5. A and B together can do a works in 12 days. B and C together do it in 15 days. If A’s efficiency is twice that of C, then the days required for B alone to finish the work is (1)
(a) 60
(b) 30
(c) 15
(d) 15
