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Friday, February 23, 2007
"ALGEBRA QUESTION OF THE DAY"
If 3 is the greatest common divisor of positive integers r and s, what is the greatest common divisor of 2r and 2s? (A) 2 (B) 3 (C) 4 (D) 6 (E) 12
its D
ReplyDeleteans:::::::::::D
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ReplyDeleted
ReplyDeleteD
ReplyDeleteCORRECT ANS IS D
ReplyDeleter/3 and s/3
therefore:
3*x1/3 and 3×2/3 (for some numbers x1 and x2)
now with 2s and 2r:
2*3*x1/? and 2*3*x2/?
the greatest number is 2*3=6
SO U ALL R CORRECT. CONGRATS