28 D in F
28 days in February
5 F on a H
5 fingers on a hand
7 C of the R
7 colours of the rainbow
90 D in a R A
90 degrees in a right angle
14 D in a FN
14 days in a fortnight
4 W on a C
4 wheels on a Car
1000 Y in a M
1000 in a millenium
1024 MB in a GB
1024 Megabytes in a Gigabyte
60 M in an H
60 minutes in an hour
5 O of the W
5 oceans of the World
12 in a D
12 in a dozen
100 Y in a C
100 years in a century
7 H in HP
7 Horcuxes in Harry Potter
11 P on a F T
11 players on a football team
52 W in a Y
52 weeks in a year
23 P of C in the H B
23 pairs of chromosomes in a Human Body
8 T on a O
8 tentacles on an Octopus
6 F in a D
6 faces in a Die
12 S of the Z
12 signs of the Zodiac
17 A C in S
17 autonomous communities in Spain
60 S in a M
60 seconds in a minute
5 T on a F
5 toes on a foot
13 S in the US F
13 stripes in the United States Flag