Question

What will be the sum of the numbers from
1 to 25?​

Answer 1

Answer:

the sum of no. from 1 to 25 will be 325

Step-by-step explanation:

it is question of arithmetic progression

Answer 2

$\huge{\star}{\underline{\boxed{\red{\sf{Answer :}}}}}{\star}$

Given :-

A. P :- 1, 2, 3,........,25

First term(a) = 1

Common difference(d) = 1

n = 25

L = 25

Solution :-

We know that,

$\huge{\boxed{\blue{\sf{S_{n} = \frac{n}{2} \times{(a + L) }}}}}$

Put values

Sn = 25 * (1 + 25)/2

Sn = 25 * 13

Sn = 325

$\huge{\boxed{\blue{\sf{S_{n} = 325}}}}$