Question : Directions: Which number will replace the question mark (?) to complete the given series? 15, 16, 20, 29, 45, (?)
Option 1: 70
Option 2: 65
Option 3: 75
Option 4: 60
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Correct Answer: 70
Solution : Given: 15, 16, 20, 29, 45, (?)
Add the squares of the consecutive natural numbers in the previous term to get the next term. 15 + 12 = 15 + 1 = 16; 16 + 22 = 16 + 4 = 20; 20 + 32 = 20 + 9 = 29; 29 + 42 = 29 + 16 = 45; 45 + 52 = 45 + 25 = 70
So, 70 is the missing term in the series. Hence, the first option is correct.
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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
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: Which number will replace the question mark (?) to complete the given series? 5, 7, 11, ?, 35, 67
Option 1: 19
Option 2: 15
Option 3: 13
Option 4: 17
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: In the following question a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. 3, 5, 9, 15, 23, 33, 45, 59, ?
Option 1: 81
Option 2: 60
Option 4: 72
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