The first five multiples of 9 are obtained by multiplying 9 by each of the first five natural numbers: 9, 18, 27, 36, 45
To find all the factors of 32, you look for numbers that divide 32 evenly: 1, 2, 4, 8, 16, 32
The first five prime numbers are the first five natural numbers greater than 1 that have no divisors: 2, 3, 5, 7, 11