Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 6, 11, 21, 41, 81, ?
Option 1: 241
Option 2: 151
Option 3: 161
Option 4: 240
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Correct Answer: 161
Solution : Given: 6, 11, 21, 41, 81, ?
The pattern is as follows – (6 × 2) – 1 = 12 – 1 = 11 (11 × 2) – 1 = 22 – 1 = 21 (21 × 2) – 1 = 42 – 1 = 41 (41 × 2) – 1 = 82 – 1 = 81 (81 × 2) – 1 = 162 – 1 = 161
So, the missing number is 161. 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. 6, 9, 7, 10, 8, 11, ?
Option 1: 12
Option 2: 9
Option 3: 11
Option 4: 10
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 21, 23, 20, 22, 19, 21, ?
Option 1: 17
Option 2: 18
Option 3: 23
Option 4: 22
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 17, 25, 52, 116, 241, ?
Option 1: 457
Option 2: 467
Option 3: 461
Option 4: 447
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 31, 41, 55, 73, 95, ?
Option 1: 121
Option 2: 111
Option 3: 123
Option 4: 143
Question : Directions: Select the letter cluster from among the given options that can replace the question mark (?) in the following series. GRAM, EPYK, CNWI, ?
Option 1: AMVH
Option 2: AMUG
Option 3: ALUG
Option 4: ALVG
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