Hi,
I thought the answer is E) but the correct answer is C)....Can anyone explain why? Thanks.
10. The numbers in which of the following pairs do NOT have a pair of distinct prime divisors in common ?
(A) 10 and 20
(B) 12 and 18
(C) 24 and 32
(D) 21 and 63
(E) 22 and 88
500 ps test22 #10
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- jayhawk2001
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Common prime divisors fordunkin77 wrote:Hi,
I thought the answer is E) but the correct answer is C)....Can anyone explain why? Thanks.
10. The numbers in which of the following pairs do NOT have a pair of distinct prime divisors in common ?
(A) 10 and 20
(B) 12 and 18
(C) 24 and 32
(D) 21 and 63
(E) 22 and 88
A - 2, 5
B - 2, 3
C - 2
D - 3, 7
E - 2, 11
Hence C
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10. The numbers in which of the following pairs do NOT have a pair of distinct prime divisors in common ?
(A) 10 and 20
(B) 12 and 18
(C) 24 and 32
(D) 21 and 63
(E) 22 and 88
a)10- 2&5; 20-2&5
b)12-2&3; 18-2&3
c)24-2&3; 32-2
d)21-3&7 ; 63-3&7
e)22-11&2 ; 88-2&11
Hence answer here is Choice C[/b]
(A) 10 and 20
(B) 12 and 18
(C) 24 and 32
(D) 21 and 63
(E) 22 and 88
a)10- 2&5; 20-2&5
b)12-2&3; 18-2&3
c)24-2&3; 32-2
d)21-3&7 ; 63-3&7
e)22-11&2 ; 88-2&11
Hence answer here is Choice C[/b]