Question

(BASED ON SUM OF N-TERMS OF A.P.) Find the sum of the first 50 natural numbers that are divisible by 4.​

Answer 1

Answer:

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Sum of First n Natural Numbers

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We will discuss here how to find the sum of first n natural numbers.

Let S be the required sum.

Therefore, S = 1 + 2 + 3 + 4 + 5 + .................... + n

Clearly, it is an Arithmetic Progression whose first term = 1, last term = n and number of terms = n.

Therefore, S = n2(n + 1), [Using the formula S = n2(a + l)]

Step-by-step explanation:

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