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a) 49
b) 50
c) 51
d) 52
e) 53

2007-08-28 06:36:07 · 17 answers · asked by Alexander 6 in Science & Mathematics Mathematics

17 answers

49 is not greater than 50
50, 52 are divisible by 2
51 is divisible by 3, 17.
answer is 53

2007-08-28 06:39:08 · answer #1 · answered by isock86 3 · 3 0

53

2007-08-28 15:15:11 · answer #2 · answered by Steiner 7 · 0 0

53

2007-08-28 13:47:34 · answer #3 · answered by lady b 4 · 0 0

53

2007-08-28 13:46:37 · answer #4 · answered by Anonymous · 0 0

53

2007-08-28 13:42:51 · answer #5 · answered by ironduke8159 7 · 0 0

53

2007-08-28 13:40:26 · answer #6 · answered by nethertry 3 · 0 0

e -53

you can ignore 49 and 50 because neither are larger than 50 (also not prime numbers 7*7 = 49 and 2 *25 = 50)

you know an even number (other than 2) is not a prime number, so 52 is not a prime number

you're left with 51 and 53, well, there is a neat trick to determine if 3 is a factor of a number, add the digits together, and if they are a multiple of three than 3 is a factor of the number

so for 51 5+1 = 6, 6 is a multiple of 3 (3*2 = 6) so 51 is not a prime,
so the prime number must be 53

e - 53

2007-08-28 13:38:31 · answer #7 · answered by Navidad_98 2 · 3 3

The only prime number in the set is 53

2007-08-28 14:14:47 · answer #8 · answered by John V 6 · 0 0

That's 53.
Let's rule out the others:
50 and 52 are even, so divisible by 2.
49 = 7*7 and it's not greater than 50.
51 = 3*17
Answer: 53.

2007-08-28 14:15:47 · answer #9 · answered by steiner1745 7 · 0 0

its 53. 7 goes into 49, 5 goes into 50, 17 goes into 51, and 13 goes into 52.

2007-08-28 13:44:10 · answer #10 · answered by Anonymous · 0 0

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