Question : Directions: Which of the following four options can replace the question mark (?) in the following series?
74, 93, ?, 145, 176, 213
Option 1: 121
Option 2: 116
Option 3: 135
Option 4: 105
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Correct Answer: 116
Solution :
Given:
74, 93, ?, 145, 176, 213
Add the consecutive prime numbers (starting from 19) to the previous number to get the next number in the series.
74 + 19 = 93; 93 + 116; 116 + 29 = 145; 145 + 31 = 176; 176 + 37 = 213
So, 116 is the missing number of the series. Hence, the second option is correct.
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