Question

find THE SUM OF First25 odd natural number​

Answer 1

Answer:

625

The number series 1, 3, 5, 7, 9, ...., 49.

Therefore, 625 is the sum of first 25 odd

numbers.

step 1 Address the formula, input

parameters & values.

Input parameters & values:

The number series 1, 3, 5, 7, 9, . .,49.

Step-by-step explanation:

step 1 Address the formula, input

parameters & values.

Input parameters & 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 apply the input parameter values

in the AP formula

Sum = n/2 x (a + Tn)

= 25/2 x (1 + 49)

= (25 x 50)/2

= 1250/2

1 + 3 + 5 + 7 + 9 +.

+ 49 = 625

Therefore, 625 is the sum of first 25 odd

numbers.

Hope this helps....

Answer 2

Step-by-step explanation:

Sum Of first 25 odd natural no.

a=1

d=2

n=25

s25=25/2 × 50

=625