Question

When we Insert 2 rational numbers between 8 and 9, the numbers are :

• A. 8.5 and 8.75
• B. 8.5 and 8.6
• C. 8.5 and 8.25
• D. 8.5 and 8.66

Answer 1

Answer: (A), (C)

The correct options are
A

8.5 and 8.75

C

8.5 and 8.25

To insert Rational numbers between any given consecutive rational numbers(integral), we have to find the sum of two numbers and then divide the sum by 2.

Between 8 and 9 :

First Number = $\frac{8+9}{2}$ = 8.5

Second Number = $\frac{8+8.5}{2}$ = 8.25

We can also find second number differently by taking 8.5 as 1st and 9 as 2nd rational number. Then the inserted number will be :

$\frac{8.5+9}{2}$ = 8.75