Question

Find the wrinf number in the number series 6, 16, 36, 76, 156, 206​

Answer 1

Answer:

The wrinf number in the series will be 206.Actually the number is 316.

Answer 2

Answer:

The wrong number in the given series is found to be 206 and the correct number in place of it would be 316.

Step-by-step explanation:

The series given to us in the problem is: 6, 16, 36, 76, 156, 206.

Or carefully observing, we can see a pattern in the numbers of the series.

We can clearly say that mathematically: $a_n=2(a_{n-1})+4$

Checking if all the numbers in the series follow this relation, we can know which is the wrong addition to the series. So, checking the consecutive terms of the series, we get:

For $a_2$:  $16=(2\times 6)+4$

For  $a_3$:  $36=(2\times 16)+4$

For  $a_4$:  $76=(2\times 36)+4$

For  $a_5$:  $156=(2\times 76)+4$

For  $a_6$:  $206\ne(2\times 156)+4$

but instead $a_6$ should be: $(2\times156)+4=316$

Thus, 316 is the correct term in the given series and 206 is the wrong number in the series.