forty percent of the first 20 whole numbers are prime. how many of the first 20 whole numbers are prime

there are 8 prime numbers before 20

Step-by-step explanation:

forty percent of 20 is:

40% × 20=

×20= 8

so the number of whole prime numbers before 20 are 8.

They are:

2,3,5,7,11,13,17,19.

step-by-step explanation:

is their an equation anywhere i can take a   look at it and see if i am right.