Question : Directions: Which number will replace the question mark (?) in the following series? 28, 30, ?, 188, 754, 3772
Option 1: 120
Option 2: 62
Option 3: 60
Option 4: 122
Correct Answer: 62
Solution : Given: 28, 30, ?, 188, 754, 3772
Multiply the number by consecutive natural number and add 2 to the resultant, to get the required missing number – (28 × 1) + 2 = 28 + 2 = 30 (30 × 2) + 2 = 60 + 2 = 62 (62 × 3) + 2 = 186 + 2 = 188 (188 × 4) + 2 = 752 + 2 = 754 (754 × 5) + 2 = 3770 + 2 = 3772
So, 62 is the required missing number in the series. Hence, the second option is correct.
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Question : Directions: Which number will replace the question mark (?) in the following number series? 52, 42, 34, 28,?
Option 1: 24
Option 2: 22
Option 3: 26
Option 4: 28
Question : Directions: Which number will replace the question mark (?) in the following series? 57, ?, 62, 71, 87, 112, 148
Option 1: 61
Option 2: 60
Option 3: 58
Option 4: 59
Question : Directions: Which number will replace the question mark (?) in the following series? 37, ?, 61, 78, 97, 120, 149
Option 1: 48
Option 2: 42
Option 3: 51
Option 4: 60
Question : Directions: Which number will replace the question mark (?) in the following number series? 24, 61, 122, 213, ?
Option 1: 337
Option 2: 334
Option 3: 340
Option 4: 343
Question : Directions: Which number will replace the question mark (?) in the following number series? 16, 28, ?, 46, 52
Option 1: 38
Option 3: 36
Option 4: 40
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