Question

1. Find the odd one out.

A) 343

B) 729

C) 1331

D) 125​

Answer 1

Answer:

289,1331 2127,343 answer

Answer 2

The odd one is 729

Given :

The numbers 343 , 729 , 1331 , 125

To find :

The odd one out.

A) 343

B) 729

C) 1331

D) 125

Solution :

Step 1 of 2 :

Write down the given numbers

Here the given numbers are 343 , 729 , 1331 , 125

Step 2 of 2 :

Find the odd one out

343 = 7³ . So 343 is cube of a prime number

729 = 9³ . So 729 is cube of a non prime number

1331 = 11³ . So 1331 is cube of a prime number

125 = 5³ . So 125 is cube of a prime number

So all the numbers 343 , 1331 , 125 are cube of a prime number

But 729 is cube of a non prime number

So the odd one is 729

Hence the correct option is B) 729

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