Question

Find the sum of all odd natural numbers less than 200
(a)1000 (b)10100 (c)9900 (d)10000​

Answer 1

Answer:

(D) 10,000

Step-by-step explanation:

Odd natural numbers less than 200 = 1, 3, 5, 7, 9...….199

Sum of all the odd numbers till 200=10,000

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Answer 2

Answer:

10000 is answer.

Step-by-step explanation:

There are 100 odd natural numbers less then 200.

you can check it using AP

a + (n - 1)d = nth term

[a = 1; d = 2 (difference between two consecutive odds)]

now,

last term is (l) = 199

first term is (a) = 1

n = 100

put these values in formula of sum of n terms (AP)

n / 2 (a + l) = Sum of n terms

100 / 2 (1 + 199) = 50 (200) = 10000

Hence 10000 is answer