What is the quickest way to add the first 25 odd numbers?

Anonymous

∙ 12y ago

Updated: 8/20/2019

Use the formula for an arithmetic series. That is, take the average of the first and the last number in the series, and multiply by 25. The first number in the series of course is 1; the last number is 1 + 2(24), since there are 24 intervals.

Wiki User

∙ 12y ago

What else can I help you with?

What do the first five odd numbers add to?

The first five odd numbers are 1, 3, 5, 7, and 9. When you add them together, the sum is 1 + 3 + 5 + 7 + 9 = 25. Therefore, the first five odd numbers add up to 25.

What do the first five odd numbers add up to?

What 9 odd numbers add up to 50?

An odd number of odd numbers can not add up to an even number. There fore any 9 (odd) odd numbers can not add up to 50 (even).

What 5 odd numbers add up to 30?

5 odd numbers you add up to give you 50?

What combination of numbers always results in an odd number?

Multiply two odd numbers Add an even and an odd Subtract an odd and an even

What 5 odd numbers add up to 32?

7 odd numbers that add up to 30 without minus?

Can not be done! An odd number of odd numbers will ALWAYS add up to an odd number.

What 2 odd numbers add up to a odd number?

None. Any two odd numbers add up to an even number.

Will you get odd number when you add 6 odd numbers?

What 3 conscutive odd numbers add up to 76?

No three odd numbers can add up to an even number.

Which 3 odd numbers add up to 100?

103