Question

The sum of 1+3+5+7+9+11+13+15+17+19 is
121
120
100
110​

Answer 1

Step-by-step explanation:

100

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Answer 2

The given series is a series of first ten odd natural numbers.

And, we know that the sum of first 'n' odd natural numbers is given by: S = n^2

Now, according to your question:

n = 10

Thus, sum of series = n^2

= (10)^2

= 100

Thereby, the correct answer is (c)100