Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 13, 26, 23, 115, 108, ?
Option 1: 1118
Option 2: 1818
Option 3: 1881
Option 4: 1188
Correct Answer: 1188
Solution : Given: 13, 26, 23, 115, 108, ?
Here, multiply and subtract prime numbers alternately from the previous numbers of the series to get the next number.
So, 1188 is the missing number. Hence the fourth option is correct.
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