which of these would be prime? 4 ,28,30,,47
2006-10-30 03:32:45 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
47
2006-10-30 04:13:29 · answer #1 · answered by Push_mb20girl 4 · 0⤊ 0⤋
47
2006-10-30 11:39:54 · answer #2 · answered by thirteen 1 · 0⤊ 0⤋
4 = 2*2
28 = 2*2*7
30 = 2*3*5
47 = 47
2006-10-30 11:40:30 · answer #3 · answered by Helmut 7 · 1⤊ 0⤋
4 , 28 , 30 are all even numbers ( can be divided by two) so....
47 must be the prime ....
2006-10-30 13:03:32 · answer #4 · answered by Brian D 5 · 0⤊ 0⤋
A prime number is a number that only it and itself fits into without any remainders. There is alot of dividing to find a prime number. Its alot easier if you take the time to memorize the prime numbers. prime numbers 1-30:1,3,5,7,11,13,17,19, 23,29,
Those are probably the ones that you will run into most.
2006-10-30 13:01:29 · answer #5 · answered by TheSkysTheLimit 2 · 0⤊ 0⤋
47 is prime, because it is only divisible by 1 and itself.
2006-10-30 11:35:24 · answer #6 · answered by Clayton A 2 · 1⤊ 0⤋
47
Doug
2006-10-30 11:39:43 · answer #7 · answered by doug_donaghue 7 · 0⤊ 0⤋