tsanife4b8iajadela tsanife4b8iajadela

28-11-2016
Mathematics

contestada

Which number is prime?

A.
57

B.
63

C.
51

D.
59

Respuesta :

Аноним Аноним

28-11-2016

D. 59 is the answer

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baabaagreysheep baabaagreysheep

28-11-2016

It's D. 59, because all of the other numbers are divisible by 3, and you can tell by adding up the digits. (5 + 7 = 12, 3 × 4 = 12) (6 + 3 = 9, 3 × 3 = 9) (5 + 1 = 6, 3 × 2 = 6)

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