P(taking 2 socks of same cllour) = 1/15
Integers are written without no fractional components so 12 is an integer .
Natural numbers are positive numbers just like the number we count. 12 is a natural number.
Rational numbers
In y=x-4 your slope is 4.
In 2x+4=5 = 0.5
X in this equation equals 140°