Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 53, 54, 50, 59, 43, ?
Option 1: 68
Option 2: 61
Option 3: 18
Option 4: 58
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Correct Answer: 68
Solution : Given: 53, 54, 50, 59, 43, ?
In the above-given series, add and subtract alternately, the square of consecutive natural numbers to the numbers. 53 + (1)2 = 53 + 1 = 54 54 – (2)2 = 54 – 4 = 50 50 + (3)2 = 50 + 9 = 59 59 – (4)2 = 59 – 16 = 43 43 + (5)2 = 43 + 25 = 68
So, the missing number is 68. Hence, the first option is correct.
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Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 68, 62, 50, 32, 8, –22, ?
Option 1: –75
Option 2: –58
Option 3: –53
Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series. 57, 59, 56, 60, ?, 61, 54
Option 1: 55
Option 2: 53
Option 3: 54
Option 4: 63
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 47, 49, 53, 55, 59, 61, 65, ?
Option 1: 56
Option 2: 76
Option 3: 67
Option 4: 69
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 27, 31, 35, 39, 43, 47, ?
Option 1: 46
Option 2: 59
Option 3: 51
Option 4: 50
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 48, 50, 53, 58, 65, 76, 89, ?
Option 1: 203
Option 2: 150
Option 3: 195
Option 4: 106
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