4 10 30 105 420 ( )
2023-06-09
A.956
B. 1258
C. 1684
D. 1890
参考答案:D
B. 1258
C. 1684
D. 1890
参考答案:D
解题指导: 4*2.5=10 10*3=30 30*3.5=105 105*4=420 420*4.5=1890,故答案为D。
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2023-06-09
解题指导: 4*2.5=10 10*3=30 30*3.5=105 105*4=420 420*4.5=1890,故答案为D。
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