What number between 20 and 25 is a prime number?
2 answers:
Prime numbers are numbers that have only one factor pair; 1 and themselves.
Let's start from 21.
21 = 1 x 21, 3 x 7.
This has two factor pairs, this is not prime.
Let's try 22.
22 = 1 x 22, 2 x 11.
This also has two factor pairs, this is not prime.
Let's try 23.
1 x 23.
This is a prime number, as it only has one factor pair; 1 and itself.
23 is your prime number.
I hope this helps!
23 is a prime number because the only multiplacation is 1 times 23
You might be interested in
I believe it's 236 if I understand the question correctly
option C is correct......
He would have 50$ in his account
Answer:
5
Step-by-step explanation:
1 mile = 5280 feet
3.6 million mi²=3.6*5280 million ft²
3.6*5280 million ft²/300 million people= 63.36 ft²/person
