Question

Choose the one which is different from the rest 7,31,15,57

Answer 1

Answer:

31.......................

Answer 2

The one which is different from the rest is 15.

Step-by-step explanation:

Given : Numbers 7,31,15,57.

To find : Choose the one which is different from the rest ?

Solution :

If we find the pattern in the numbers then,

Numbers can be expressed as a square power of 2 + number + one.

For 7, $2^2+(2+1)=4+3=7$

For 31, $5^2+(5+1)=25+6=31$

For 57, $7^2+(7+1)=49+8=57$

But 15 cannot be expressed in this form.

Therefore, the one which is different from the rest is 15.

# Learn more

Choose the one which is different from rest option

a. 6450

b. 1776

c. 2392

d. 3815

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