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How do you find the 20th odd number?

Published in Odd Numbers 1 min read

The 20th odd number is 39. Here's how you can figure that out:

Odd numbers are whole numbers that are not divisible by 2. They form a sequence starting with 1, 3, 5, 7, and so on. The reference provides the first 20 odd numbers.

  • Listing the Numbers: One way to find the 20th odd number is simply to list them out until you reach the 20th one. According to the reference, the first 20 odd numbers are: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, and 39.

  • Using a Formula: A more efficient method uses a formula. The nth odd number can be found using the formula:

    Odd Number = 2n - 1

    Where 'n' is the position of the odd number in the sequence.

    So, to find the 20th odd number:

    Odd Number = 2 * 20 - 1 = 40 - 1 = 39

Therefore, the 20th odd number is 39.

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