You have to work out what the letters mean. See No 0 as an example. According to MENSA, if you get 23 of these, you are a "genius". Only 2 MENSA members achieved full marks. See how well you do.
This is an Excel file that will tell you if you got the answer correct. Email if you are interested in the file.
PS  My coworkers and myself have 32 out of 33 answered if you need help.
0 24 H in a D ............... 24 Hours in a Day
1 26 L of the A
2 7 D of the W
3 7 W of the W
4 12 S of the Z
5 66 B of the B
6 52 C in a P (WJs)
7 13 S in the USF
8 18 H on a G C
9 39 B of the O T
10 5 T on a F
11 90 D in a R A
12 3 B M (S H T R)
13 32 is the T in D F at which W F
14 15 P in a R T
15 3 W on a T
16 100 C in a R
17 11 P in a F (S) T
18 12 M in a Y
19 13=UFS
20 8 T on a O
21 29 D in F in a L Y
22 27 B in the N T
23 365 D in a Y
24 13 L in a B D
25 52 W in a Y
26 9 L of a C
27 60 M in a H
28 23 P of C in the H B
29 64 S on a C B
30 9 P in S A
31 6 B to an O in C
32 1000 Y in a M
33 15 M on a D M C
