The differences between consecutive terms are increasing consecutive odd numbers: +3, +5, +7, +9. The next difference should be +11. So, 20 + 11 = 31.
57. Fill in the blank: 3:4:5 :: 9: ____ : 41
(a) 35
(b) 40
(c) 45
(d) 12
Answer:
(b) 40
Explanation:
This analogy represents Pythagorean triples. (9 + 16 = 25). For the second set, , meaning . , so x = 40.
58. If the following series is written in the reverse order, which number will be third to the right of the sixth number of the left ? 6, 2, 1, 0, 5, 11, 13, 7, 3, 9, 7, 0, 3, 8, 4
(a) 13
(b) 5
(c) 9
(d) 0
Answer:
(a) 13
Explanation:
Reversing the series gives: 4, 8, 3, 0, 7, 9, 3, 7, 13, 11, 5, 0, 1, 2, 6. The sixth number from the left is 9. The third number to the right of 9 is 13.
59. If today is Monday then what will be the day of week after 49 days ?
(a) Friday
(b) Saturday
(c) Sunday
(d) Monday
Answer:
(d) Monday
Explanation:
Since 49 is exactly divisible by 7 (49 / 7 = 7 weeks exactly), there are 0 odd days. The day of the week will be the same: Monday.
60. Complete the following: MH, NI, OJ, ______
(a) PT
(b) PK
(c) SP
(d) KP
Answer:
(b) PK
Explanation:
The first letters follow the alphabetical sequence: M, N, O, P. The second letters follow H, I, J, K. Thus, the next term is PK.
