Question

52. Find the sum of first n-natural numbers and hence find the sum of first 30 natural numbers.
53. Find the sum of all natural numbers from a) 1 to 180 which are divisible by 4
b) from 1 to 200 which are divisible by 7 c) from 1 to 300 which are divisible
by 12 d) from 300 to 500 which are divisible by 10.​

Answer 1

Answer:

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