Question

Which of the given alternatives will replace the ?

$5,6,13,26,45,?$

• A. $68$
• B. $74$
• C. $70$
• D. $82$

Answer 1

The correct option is C $70$

The difference between the next number and previous numbers in the series of $1,7,13,19$ and in this series each number has difference of $6$
so the next number will be $45+25=70$