Question

甲數(shù)是乙數(shù)的3倍，甲、乙兩數(shù)的最大公因數(shù)是

C

，最小公倍數(shù)是

B

．
A.1   B．甲數(shù)  C．乙數(shù)  D．甲乙兩數(shù)的積．

Answer 1

分析：甲數(shù)是乙數(shù)的整數(shù)倍，求兩個(gè)數(shù)為倍數(shù)關(guān)系時(shí)的最大公因數(shù)和最小公倍數(shù)是：兩個(gè)數(shù)為倍數(shù)關(guān)系，最大公因數(shù)為較小的數(shù)；最小公倍數(shù)為較大的數(shù)；由此解答問題即可．

解答：解：由題意得，甲數(shù)÷乙數(shù)=3，
可知甲、乙兩數(shù)的最大公因數(shù)是C，最小公倍數(shù)是B．
故答案為：C，B．

點(diǎn)評：本題主要考查兩個(gè)數(shù)的最大公因數(shù)和最小公倍數(shù)的求法，注意先弄清楚兩個(gè)數(shù)之間的關(guān)系，進(jìn)而解答．