If you write all of the numbers from 1 to 100 as words: ONE, TWO, THREE, …, ONE HUNDRED:
Which number is first alphabetically?
Which number is last alphabetically?
Which is the most common letter?
Which is the least common letter, and which number does it appear in?
Which letter is never used?
What is the total number of letters?
Which number is the longest?
How many numbers start with the letter T?
How many numbers contain the letter V?
100 is the first number to contain the letter N, what is the last number before 100 to contain a new letter for the first time?
If we carry on writing, when does the letter A first appear?
If we carry on writing, when does the letter B first appear?
Some questions have more than one answer, can you find them all?
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Answers
EIGHT
TWO
E occurs 148 times, followed by T (137 times), I (91 times), N (90 times), and Y (80 times).
The letters L (ELEVEN, and TWELVE) and D (ONE HUNDRED) both occur twice.
A, B, C, J, K, M, P, Q, Z.
864 letters (excluding hyphens).
SEVENTY-THREE, SEVENTY-SEVEN, SEVENTY-EIGHT.
25 numbers: 2, 3, 10, 12, 13, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39.
29 numbers: 5, 7, 11, 12, 17, 25, 27, 35, 37, 45, 47, 55, 57, 65, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 85, 87, 95, 97.
Y first appears in TWENTY, and every subsequent number below 100 uses a letter already used.
ONE HUNDRED AND ONE. In US English the AND is usually dropped, so the letter A first appears in ONE THOUSAND.
ONE BILLION.