Question : Directions: Find the wrong number in the following series. 16, 16, 17, 21, 27, 46, 71
Option 1: 27
Option 2: 46
Option 3: 16
Option 4: 71
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Correct Answer: 27
Solution : Given: 16, 16, 17, 21, 27, 46, 71
Add the square of the consecutive whole numbers to the previous term to obtain the next term – 16 + (0)2 = 16; 16 + (1)2 = 17; 17 + (2)2 = 21; 21 + (3)2 = 30 ≠ 27; 30 + (4)2 = 46; 46 + (5)2 = 71
So, 27 is the wrong term in the given series. Hence, the first option is correct.
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Question : Directions: In the following question, find the odd number pair from the given alternatives.
Option 1: 19 – 38
Option 2: 21 – 40
Option 3: 23 – 46
Option 4: 16 – 32
Question : Directions: Which number will replace the question mark (?) in the following series? 1, 1, 2, 4, 7, 11, 16, ?, 29, 37
Option 1: 17
Option 2: 23
Option 3: 22
Option 4: 19
Question : Directions: In the following question, a series is given with one number missing. Select the missing number from the given alternatives. 16, 17, 25, 52, 116, ?
Option 1: 225
Option 2: 219
Option 3: 241
Option 4: 263
Question : Directions: Select the option that will replace the question mark (?) in the following number series. 11, 15, 12, 16,13, ?
Option 1: 31
Option 2: 17
Option 3: 21
Question : Directions: Select the number that does not belong to the given series. 2, 8, 3, 27, 4, 64, 5, 225
Option 2: 8
Option 3: 225
Option 4: 64
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