Question

5:30::9:?
find the next number
​

Answer 1

Answer:

5(5+1)=30,9(9+1)=90

Answer 2

5 : 30 :: 9 : 90

Given :

5 : 30 :: 9 : ?

To find :

The next number

Solution :

Step 1 of 2 :

Find the pattern

Here it is given that 5 : 30 :: 9 : ?

We have

5 : 30 = 5 : (5² + 5)

Thus the pattern is below

For a number n

n : (n² + n)

Step 2 of 2 :

Find the next number

For n = 9 we get

9 : (9² + 9)

= 9 : (81 + 9)

= 9 : 90

Thus we get , 5 : 30 :: 9 : 90

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