Question

1.0 marks
From the given choices select the odd man out
121
289
169
Next

Answer 1

Answer:

please ask again it's Nt clear

Explanation:

and 121 is square of 11

289 of 17

169 of 13

Answer 2

225 is the odd one out because 121, 289 and 169 are squares of prime numbers 11, 17 and 13 respectively. Whereas, 225 is a square of a composite number 15.

QUESTION:- From the given choices select the odd one out 121, 289, 169 and 225

GIVEN:- 121, 289, 169 and 225

TO FIND:- odd one out

SOLUTION:-

• A Prime Number is a natural number which is greater than 1 and is not a product of two smaller natural numbers. Example 15

• A Composite Number is a natural number which is greater than 1 and that can be formed by multiplying two smaller positive integers. Examples 11, 17 and 13

As we know,

• 121 is a square of 11 = 11×11
• 289 is a square of 17 = 17×17
• 169 is a square of 13 = 13 × 13
• 225 is a square of 15 = 15×15

15 is a composite number because it can be formed by multiplying 3 and 5.

Hence, 225 is the odd one out because 121, 289 and 169 are squares of prime numbers 11, 17 and 13 respectively. Whereas, 225 is a square of a composite number 15.

#SPJ2