Question

find the sum of first 25 natural number​

Answer 1

Answer:

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find the sum of first 25 natural number

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25=25×262. Simplifying the above expression, we have 1+2+... +25=25×13=325. Hence, the sum of the first 25 natural numbers is 325.

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Answer 2

Step-by-step explanation:

n/2(a+l)

n- 25

a- 1

l- 25

so,

25/2(1+25)

= 25/2(26)

= 25 x 13

=325

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