RPF 5 Jan 2019 Question 118

Question 118

Find the next number in the series.
14, 31, 59, 121, 239, ?

Solution

We can observe that given series is in below pattern,

14, $$ 14 \times 2 + 3 $$, $$ 31 \times 2 - 3 $$, $$ 59 \times 2 + 3 $$, $$ 121 \times 2 - 3 $$, $$ 239 \times 2 + 3 $$,

Next number would be $$ 239 \times 2 + 3 $$ = 481



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