You can only remember 4 things at a time.
31
People who are lying to you tend to look up and to the left (their left).
178
Intelligent people have more zinc and copper in their hair.
233
The world's shortest man measures only 21.5 inches.
73
A chance of a woman having twins is increased after the age of 35. About 1 in 27 women will give birth to twins after this age. After 50 the chances of having twins is 1 in 9.
51
Two in five people in the world marry their first love.
270