Question : Directions: Which number will replace the question mark (?) to complete the given series? 2, 5, 10, 17, 26, 37, 50, ?
Option 1: 67
Option 2: 61
Option 3: 63
Option 4: 65
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Correct Answer: 65
Solution : Given: 2, 5, 10, 17, 26, 37, 50, ?
In the above-given series, add consecutive odd numbers from 3 onwards to the previous number to obtain the next number – 2 + 3 = 5; 5 + 5 = 10; 10 + 7 = 17; 17 + 9 = 26; 26 + 11 = 37; 37 + 13 = 50; 50 + 15 = 65
So, 65 is the missing number. Hence, the fourth option is correct.
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Question : Directions: Which number will replace the question mark (?) to complete the given series? 26, 37, 50, 65, ?, 101
Option 1: 84
Option 2: 78
Option 3: 80
Option 4: 82
Question : Directions: What should come in place of X in the given series? 5, 10, 20, 37, 63, X
Option 1: 100
Option 2: 105
Option 3: 95
Option 4: 90
Question : Directions: Which number will replace the question mark (?) to complete the given series? 3, 7, 15, 31, 63, 127, ?
Option 1: 245
Option 2: 250
Option 3: 260
Option 4: 255
Question : Directions: Which term from among the given options can replace the question mark (?) in the following series to make it logically complete? AN 37, (?), EH 50, GE 58, IB 67
Option 1: DL 42
Option 2: DI 45
Option 3: CK 43
Option 4: CL 44
Question : Directions: Which number will replace the question mark (?) to complete the given series? 17, 18, 20, ?, 27, 32
Option 1: 22
Option 2: 20
Option 3: 23
Option 4: 21
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