If n is the product of the integers from 1to 20 inclusive, what is the greatest integer k for which 2k is a factor of ?
A. 10 B.20 C. 15 D. 18. E 20.
If x>0 , then 1/[v(2x)+vx]=?
A. 1/v(3x)
B 1/[2v(2x)]
c. 1/(xv2)
d. (v2-1)/vx
e. (1+v2)/vx
数学实在太菜了, 请把过程写下来好么? 3Q
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列出1到20中所有含有2的数:2 4 6 8 10 12 14 16 18 20, 将他们中含2的次方相加, 就得出了18;昨天我也问了类似的题, 你可以查一查
问题what is the greatest integer k for which 2k is a factor of ? 中2k应该是2的k次方吧?
2乘K
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