Question : Directions: What should come in place of X in the given series?
23, 31, 47, 71, 103, X
Option 1: 153
Option 2: 147
Option 3: 150
Option 4: 143
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Correct Answer: 143
Solution :
Given:
23, 31, 47, 71, 103, X
Add consecutive multiple of 8, starting from 8 to get the required missing number in the series.
So, 143 is the missing term in the series. Hence, the fourth option is correct.
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