Here's a brand new mentalfloss.com Brain Game Free-for-all Friday challenge. Enjoy!

When writing the numbers
by ones (in English) from 1 to 100,
how many times would the letter "O" appear?

Here is the ANSWER.

THE ANSWER:

39 times.

1, 2, 4, 14, 21, 22, 24, 31, 32, 34, 40, 41 (twice), 42 (twice), 43, 44 (twice), 45, 46, 47, 48, 49, 51, 52, 54, 61, 62, 64, 71, 72, 74, 81, 82, 84, 91, 92, 94, 100.

Have a great weekend!