Question

find the sum of all integers from 1 to 201​

Answer 1

Answer:

The number series 1, 2, 3, 4, . . . . , 200, 201. Therefore, 20301 is the sum of positive integers upto 201.

Answer 2

Answer : 20,301 ✔✔

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Explaination :

Here, a = 1, d = 1 and n = 201

Sn = n/2 [ 2a + (n - 1)d ]

=> Sn = 201/2 [ 2×1 + (201 - 1)1 ]

=> Sn = 201/2 × 202

=> Sn = 201 × 101 = 20,301

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I hope it will help you ☺

Fóllòw Më ❤