20. Unlike the decimal number system where we use the digits 0 to 9 to represent a number, in a binary system, we use only 2 digits that are 0 and 1 (bits). By memorising these tables students can solve mathematical questions really fast.
4 and 5 are the factors of 20, that is, 5 divides 20 into equal parts of 4 each. Deserick jake bird, age 37, was sentenced to 20 years in federal prison, followed by 10 years of supervised release.