Directions (1–5): In the following number series one number is wrong. Find out the wrong number.
Q1. 267, 263, 251, 230, 203, 167
Q2. 135, 45, 18, 10, 6, 6
Q3. 45, 48.5, 55.5, 65, 80, 97.5
(a) 48.5
(c) 97.5
(d) 55.5
Q4. 856, 452, 250, 149, 98, 73.25
(d) 73.25
Q5. 739, 758, 720, 737, 705, 718, 688
Directions (Q. 6 – 10): What value should come in the place of question mark (?) in the following questions?
Q7. (232 % of 585) ÷ 150 = ?
(b) 9.048
(d) 10.148
(e) 13.144
Q8. 9845 = 5620 + 65 × ?
Q9. 134 × 17 = [? × 40] + 177
(b) 50.525
(c) 52.525
Q10. 300/25 * 250/15 / 25/30 = ?
(c) 1200
Directions (11 - 15) : Study the given information carefully and answer the questions that follow:
An urn contains 6 red, 4 blue, 2 green and 3 yellow marbles.
Q11. If four marbles are picked at random, what is the probability that at least one is blue?
Q12. If two marbles are picked at random, what is the probability that both are red?
Q13. If three marbles are picked at random, what is the probability that two are blue and one is yellow?
Q14. If four marbles are picked at random, what is the probability that one is green, two are blue and one is red?
Q15. If two marbles are picked at random, what is the probability that either both are green or both are yellow?
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