Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 72, 85, 68, 81, ?, 77
Option 1: 70
Option 2: 61
Option 3: 64
Option 4: 67
Correct Answer: 64
Solution : Given: 72, 85, 68, 81, ?, 77
Add 13 and subtract 17 alternatively from each term of the series to get the missing term of the series. 72 + 13 = 85; 85 – 17 = 68; 68 + 13 = 81; 81 – 17 = 64; 64 + 13 = 77
So, 64 is the missing number. Hence, the third option is correct.
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Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 112, 101, 91, ?, 74, 67
Option 1: 81
Option 2: 85
Option 3: 80
Option 4: 82
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 39, 53, ?, 108, 149, 199
Option 2: 72
Option 3: 79
Option 4: 76
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 69, 65, 67, 63, ?, 61
Option 1: 65
Option 2: 60
Option 3: 62
Option 4: 64
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 61, 95, 138, 197, 279, (?)
Option 1: 397
Option 2: 389
Option 3: 391
Option 4: 395
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 159, 146, ?, 120, 107, 94, 81
Option 1: 136
Option 2: 131
Option 3: 133
Option 4: 140
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