#21 - Science Series Puzzle
H, Be, F, S, Mn, Kr, In, Gd, Tl, ?
What's the next in the series?
Fm.
These are the chemical elements whose atomic numbers are perfect squares.
1, 4, 9, 16, 25, 36, 49, 64, 81, 100.
#22 - Simple Maths Puzzle
In a certain country ½ of 5 = 3. If the same proportion holds, what is the value of 1/3 of 10 ?
4
5/2 = 3 and 10/3 = x
(10/3)/(5/2) = 20/15 = 4/3
So x/3 = 4/3
x=4