Question

Paul, a spy, received secret codes from his agency. Help him figure out the next number.
1, 12, 26, 47, 79, ?

• A. 132
• B. 128
• C. 140
• D. 126

Answer 1

The correct option is D 126

The given series is 1, 12, 26, 47, 79, ?.

Let's try to find some patterns in the series.

Now, let's form the series for the differences.


The series 3, 7, 11 has the same difference of 4 between the terms.
So, the next term of the obtained series is 3, 7, 11, 15.

Now, let's move in the forward direction to find the next term of the given series.
Now, for the final series.
So, the next term of the given series is 126.