Math, asked by rajkanthjune28, 19 days ago

find the sum of all the natural numbers from 10 to 20​

Answers

Answered by XX456XX
0

I've attached the Answer, Hope you find it helpful!

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Answered by suhail2070
0

Answer:

SUM = 165.

Step-by-step explanation:

a = 10 \\ \\ d = 1 \\ \\ 20 = a + (n - 1)d \\ \\ 20 = 10 + (n - 1) \\ \\ 10 + 1 = n \\ \\ therefore \: \: n = 11 \\ \\ require d \: \: sum = \frac{11}{2} (10 + 20) \\ \\ = 11 \times 15 \\ \\ = 165.

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