数学题(过程)(正确)废话不要多说
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数学题(过程)(正确)废话不要多说
1.在1到100全部自然数中,即不是6的倍数又不是5的倍数有多少个?分别是多少?
2.() () 1
—— + ——=——
() () 2
() () 1
—— + ——=——
() () 3
() () 1
—— + ——=——
() () 4
1.在1到100全部自然数中,即不是6的倍数又不是5的倍数有多少个?分别是多少?
2.() () 1
—— + ——=——
() () 2
() () 1
—— + ——=——
() () 3
() () 1
—— + ——=——
() () 4
(1)67个
1,2,3,4,7,8,9,11,13,14,16,17,19,21,22,23,26,27,28,29,31,32,33,34,37,38,39,41,43,44,46,47,49,51,52,53,56,57,58,59,61,62,63,64,67,68,69,71,73,74,76,77,78,79,81,82,83,86,87,88,89,91,92,93,94,97,98,99
5,6的倍数有6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96,5,10,15,20,25,35,40,45,50,55,65,70,75,80,85,95,100
(2)1/4+1/4=1/2
1/6+1/6=3/1
1/8+1/8=1/4
1,2,3,4,7,8,9,11,13,14,16,17,19,21,22,23,26,27,28,29,31,32,33,34,37,38,39,41,43,44,46,47,49,51,52,53,56,57,58,59,61,62,63,64,67,68,69,71,73,74,76,77,78,79,81,82,83,86,87,88,89,91,92,93,94,97,98,99
5,6的倍数有6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96,5,10,15,20,25,35,40,45,50,55,65,70,75,80,85,95,100
(2)1/4+1/4=1/2
1/6+1/6=3/1
1/8+1/8=1/4