1. The sum of two consecutive numbers is 55, which is the largest number?
(a) 25
(b) 28
(c) 26
(d) 27
Answer : (b) 28

2. The radii of two spheres are in the ratio 2:3. What is the ratio of their surface areas?
(a) 4:9
(b) 2:3
(c) 8:27
(d) 4:6
Answer : (c) 8:27

3. What is the chance of getting a 2 or 4 in rolling a die?
(a) 2/3
(b) 1/6
(c) 1/3
(d) 1/2
Answer : (b) 1/6

4. What is the common ratio of the progression 3√2, 6, 6√2 ?
(a) 3
(b) 2
(c) √2
(d) √3
Answer : (c) √2

5. Five times an unknown number is 5 less than 50. The unknown number .
(a) 10
(b) 11
(c) 9
(d) 5
Answer : (c) 9