Question

The sum of first 100multiples of 5id

Answer 1

Answer:

The sum of the first 100 multiples of 5 is 25250.

Step-by-step explanation:

a = 5, d = 5, n = 100, Sn = ?

Sn = (n/2){2a + (n - 1)d}

S100 = 50 * {2(5) + (99)5}

S100 = 50 * {10 + 495}

S100 = 50 * 505

S100 = 25250.

The sum of the first 100 multiples of 5 is 25250.

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