Question : Directions: In the following question, a series is given with one number missing. Select the missing number from the given alternatives. 3, 7, 13, 27, 53, ?
Option 1: 107
Option 2: 111
Option 3: 109
Option 4: 105
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Correct Answer: 107
Solution : Given: 3, 7, 13, 27, 53, ?
Multiply the number by 2 and then, alternately add and subtract 1 from the resultant, to get the required missing number in the series. (3 × 2) + 1 = 6 + 1 = 7; (7 × 2) – 1 = 14 – 1 = 13; (13 × 2) + 1 = 26 + 1 = 27; (27 × 2) – 1 = 54 – 1 = 53; (53 × 2) + 1 = 106 + 1 = 107
So, the required number is 107. Hence, the first option is correct.
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Question : Directions: In the following question, a series is given with one number missing. Select the missing number from the given alternatives. 3, 7, 16, 35, ?
Option 1: 65
Option 2: 72
Option 3: 74
Option 4: 76
Question : Directions: In the following question, a series is given with one number missing. Select the missing number from the given alternatives. 33, 10, 43, 53, 96, ?
Option 1: 150
Option 2: 163
Option 3: 171
Option 4: 149
Question : Directions: In the following question, a series is given with one number missing. Select the missing number from the given alternatives. 4, 13, 41, 126, 382, ?
Option 1: 1149
Option 2: 1146
Option 3: 1151
Option 4: 1167
Question : Directions: Which number will replace the question mark (?) in the given series? 55, 68, 81, 94, ?, 120
Option 1: 105
Option 2: 107
Option 3: 111
Option 4: 109
Question : Directions: In the following question, a series is given with one number missing. Select the missing number from the given alternatives. 13, 24, 37, 61, 98, ?
Option 1: 159
Option 3: 134
Option 4: 172
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