Column A Column B The number of positive divisors of 24 The number of positive divisors of 50 A．if the quantity in Column A is greater B．if the quantity in Column B is greater C．if the two quantity are equal D．if the relationship cannot be determined from the information given
A.if B.if C.if D.if
【参考答案】
A 解析：本题的正确是(A)。比较的左右项分别为24和50正因子(positive divisor)的数目，根据因子数求解公式可得：24=2的3次方×3，所以24的因子数为(3+1)(1+1)=8；50=5的平方×2，所以50的因子数(2+1)(1+1)=6。