Question

find missing term 7, 13,23,41,75

Answer 1

Given:

The series: 7, 13,23,41,75

To find:

The missing term( the next number after 75)

Solution:

For finding the logic behind the series, we first check the difference between the numbers.

Here, we get to see a pattern which can be written as-

(First number*2)-1

(Second number*2)-3

(Third number*2)-5 and so on

So, each number is first multiplied by 2( constant factor) and then subtracted by a number that gets incremented by 2( 1,3,5,7,9 and so on).

So, here we get:

(7*2)-1 = 13( second number)

(13*2)-3= 23( third number)

(23*2)-5 = 41( fourth number)

(41*2)-7 = 75( fifth number)

So the next number( missing one) in the series would be:( 75*2)-9 = 141

The missing number in the series is 141.

Answer 2

Answer:

Step-by-step explanation:

7, 13,23,41,75,141