SOLUTION: How many prime numbers does Set S have? S = { 1, 24, 6, 7, 13, 161, 171 } a 3 b 4 c 5 d 6 e 7

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: How many prime numbers does Set S have? S = { 1, 24, 6, 7, 13, 161, 171 } a 3 b 4 c 5 d 6 e 7       Log On


   

Question 315457: How many prime numbers does Set S have? S = { 1, 24, 6, 7, 13, 161, 171 }
a 3 b 4 c 5 d 6 e 7
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
7, 13 are the only primes.
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1 - not a prime number and not a composite number.
24 - 2*2*2*3
6 - 2*3
7 - 1*7
13 - 1*13
161 - 7*23
171 - 3*57