Question

Find the missing number 9:80:7:_ a)48 b)50 c)78 d)82 With solution

Answer 1

Answer:

Option a - 48

Step-by-step explanation:

Given : Expression $9:80:7: ?$

To find : The missing number ?

Solution :

If we examine the expression,

$9:80:7: ?$

i.e. $\frac{9}{80}:\frac{7}{?}$

The logic behind 9:80 gives the relation $x^2-1$

For x=9, $9^2-1=81-1=80$

Similarly we apply it on 7:?

For x=7, $7^2-1=49-1=48$

Therefore, The missing number is ?=48.

So, Option 'a' is correct.