Question

25 can be expressed as the sum of first ________ consecutive odd numbers. *

Answer 1

Answer:

The correct answer is 5. 25 is the sum of the first 5 consecutive odd numbers 1+3+5+7+9 = 25

Answer 2

25 can be expressed as the sum of first five consecutive odd numbers

Given :

The number 25

To find :

25 can be expressed as the sum of first ___ consecutive odd numbers

Solution :

Step 1 of 2 :

Write down the given number

The given number is 25

Step 2 of 2 :

Express 25 as the sum of odd numbers.

We know that sum of n consecutive odd numbers = n²

Now 25 = 5²

So 25 can be expressed as the sum of first five consecutive odd numbers

First 5 odd numbers are 1 , 3 , 5 , 7 , 9

Hence we can conclude that

25 = 1 + 3 + 5 + 7 + 9

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