The first odd number is 1, the second odd number is 3, the

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The first odd number is 1, the second odd number is 3, the third odd number is 5 and so on. The 200th odd number is

1. 399
2. 421
3. 357
4. 599

Correct Option: A

Here , First odd number = 1
Second odd number = 3
Third odd number = 5
Common difference ( d ) = 3 - 1 = 5 - 3 = 2
∴ nth odd number = 1 + (n – 1) 2 = 2n – 1
∴ 200th odd number = 2 × 200 – 1 = 400 – 1 = 399