Question

What is the sum of the first 30 natural numbers?
A) 464
B) 465
C)4S?
Which number cannot
4)
D) 461​

Answer 1

Answer:

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Answer 2

The series of first 30 natural numbers is in Arithmetic Progression where a = 1, d = 1 and n = 30

$S_{n} = \frac{n}{2} [2a + (n - 1)d] \\ \\ = >S_{n} = \frac{30}{2} [2 \times 1 + (30 - 1)1] \\ \\ = > S_{n} = 15(2 + 29) \\ \\ = > S_{n} = 15 \times 31 = 465$

So, the correct option is (b) 465 ✔✔

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Hope it helps ☺

Fóllòw Më ❤