1.

What is the sum of first 50 odd natural numbers?1). 6252). 12503). 25004). 680

Answer»

The sum of first 50 odd numbers i.e. (1, 3, 5, …., 99)

Here, first number (a) = 1

And, LAST number (l) = 99

So, Sum = (n/2) × (a + l) = 50/2 × (1 + 99) = ?2500


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