Question : Directions: What should come in place of the question mark (?) in the given series?
71, 73, 79, ?, 89, 97
Option 1: 81
Option 2: 83
Option 3: 90
Option 4: 84
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Correct Answer: 83
Solution :
Given:
71, 73, 79, ?, 89, 97
The numbers given in the series are the consecutive prime numbers (starting from 71).
So, the next prime number after 79 is 83.
So, 83 is the missing number of the series. Hence, the second option is correct.
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