Question

Johan needs to send a series of codes for a secret mission.

While generating the following series, he could not think of the next number in it.

12, 24, 14, 28, 18, 36, __

Help Johan to select the next number in the series.

• A. 28
• B. 26
• C. 24
• D. 25

Answer 1

The correct option is B 26

The given numbers form an alternating multiplication and subtraction series. We get the second number by multiplying the first number by 2, and the third number by subtracting 10 from the second number. The other numbers follow the same sequence.

So, the series can be shown as:

$12\times 2=24$
$24-10=14$
$14\times 2=28$
$28-10=18$
$18\times 2=36$
$36-10=26$

So, the next number in the given series will be 26.