Question

what is the sum of 25 odd natural number?​

Answer 1

Answer:625

Step-by-step explanation:

The odd numbers are: 1, 3, 5, 7, 9,11...49

Difference - 2 (3-1)

The total no of terms is, n = 25

Sum = n/2 x (a+Tn)

25/2 x (1+49) = 1250/2

=625

The sum of first 25 odd numbers is 625!

Answer 2

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Answer is 625

Step-by-step-explanation

• The number series :-

1,3,5,7,9,. . . . . . . . . . . .,49

Therefore 625 is the sum of 25 natural odd numbers

• Step 1-

Use the formula, input values

• The number Series = 1,3,5,7,9,. . . . . . . . . . . .,49

• The first Term "a" = 1

• The Common difference "d" = 2

• Total number of terms "n" = 25

• Step 2-

Input parameters values in AP formula

Sum = n/2 × (a + Tn)

= 25/2 × (1 + 49)

= (25 × 50) /2

= 1250 /2

= 625

• Therefore, the sum of 25 odd natural numbers = 625

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Hope it helps you!