(-3)乘以5/6乘以(-4/5)乘以(-1/4)
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(-3)乘以5/6乘以(-4/5)乘以(-1/4)
(-3)乘以5/6乘以(-4/5)乘以(-1/4)
(-3)乘以5/6乘以(-4/5)乘以(-1/4)
收起
=-1/2
约去5、4、3后就得结果了。
等于负2乘以负4/5乘负1/4
1乘以2乘以3乘以4乘以5乘以...乘以2010的末尾有( )个连续的零.
(-3)乘以5/6乘以(-4/5)乘以(-1/4)
观察1乘以2乘以3乘以4+1=25=5² 2乘以3乘以4乘以5+1=121=11²3乘以4乘以5乘以6+1=361=19²(1)计算5乘以6乘以7乘以8+1的结果是多少?(2)由此你能推出一般的结论吗?
1乘以2乘以3+2乘以3乘以4+3乘以4乘以5+...+7乘以8乘以9
(-4)乘以5乘以(-0.25)=?
(7/10+4/3)乘以5;135乘以8/9乘以3/4;6/11乘以7/8-6/8乘以6/11
(1-1/2)乘以(1-1/3)乘以(1-1/4)乘以(1-1/5)乘以(1-1/6)乘以(1-1/7)的计算过程
0除以3乘以4乘以5乘以6乘以7乘以8乘以9乘以10除以3除以2等于
6/7乘以( )=3/5乘以( )=9乘以( )=0.2乘以( )=1
=3乘以2乘以1,=4乘以3乘以2乘以1,=5乘以4乘以3乘以2乘以1,那么100!除以99!
1平方乘以2平方乘以3平方乘以4平方乘以5平方乘以6平方等于
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0.25乘以5乘以4乘以125
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20分之7乘以6表示( ) 4分之3乘以6分之5表示( )