Question

find the missing number 25,17,6; 38,18,8; 89,16,?

Answer 1

Answer(25+17)/6==7

(38+18)/8=7

(89+16)/?=7

105/7=15

Step-by-step explanation:

Answer 2

GIven:

The series of numbers,

                                $25,17,6\\38,18,8\\89,16,?$

To Find:

The missing number.

Solution:

For Finding the missing number,

The logic behind the first two series is,

                                     $=\frac{25+17}{6}\\= \frac{42}{6}\\=7$

when the first two numbers are added and the sum is divided by the third term, then the result comes to be 7.

So for the third series,

Let us assume the missing number to be '$x$'.

                                  $7=\frac{89+16}{x}\\x=\frac{105}{7}\\x=15$

Hence the missing number is 15.