0 24 H in a D
24 HOURS IN A DAY
1 1024 B in a K
1024 Bytes in a Kilobyte
2 The S R of -1 is an I N
The Square Root of -1 is an Imaginary Number
3 666 is the N of the B
666 is the Number of the Beast
4 12 N on a C
12 Numbers on a Clock
5 4 C in the H H
4 Chambers of the Human Heart
6 40 D of L
40 Days of Lent
7 99 B of B on the W
99 Bottles of Beer on the Wall
8 2 L in a S P of G
2 Lenses in a Standard Pair of Glasses
9 12 D of J
12 Disciples of Jesus
10 2 P in a D
2 players in a Duet
11 S W and the 7 D
Snow White and the 7 Dwarfs
12 2 S of a C
2 Sides of a Coin
13 4 S in a D of C
4 suits in a Deck of Cards
14 8 H in a R W D
8 Hours in a Regular Work Day
15 150 P in the B
150 Psalms in the Bible
16 E S H M P N S with 555
Every Single Hollywood Movie Phone
Number Starts with 555
17 42 is the A to L, the U, and E
42 is the Answer to Life, the Universe,
and Everything
18 3 M T S - C, F and K
3 Major Temperature Scales - Celsius,
Fahrenheit and Kelvin

A lot of these were very hard, we know, but there were people that solved the whole thing under 2 hours, so it's not impossibly hard ...

We hope you had fun with these (and were not that frustrated/annoyed).