Question

What is the ratio of the-
(a) number of even numbers to odd numbers from the set of natural numbers from 30 to 50?
(b) prime numbers and composite numbers from the set of natural numbers from 1 to 20?

pls answer me fast
and with explaination i will mark u you as the brainliest​

Answer 1

Answer:

10:11

2:3

is the solution