Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 71, 73, 76, 81, 88, 99, 112, ?
Option 1: 130
Option 2: 139
Option 3: 140
Option 4: 129
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Correct Answer: 129
Solution : Given: 71, 73, 76, 81, 88, 99, 112, ?
Add consecutive prime numbers in the previous term, to obtain the next term – 71 + 2 = 73; 73 + 3 = 76; 76 + 5 = 81; 81 + 7 = 88; 88 + 11 = 99; 99 + 13 = 112; 112 + 17 = 129
So, 129 is the missing term in the series. Hence, the fourth option is correct.
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