(1+1/105)x(1+1/106)x(1+1/107)x(1+1/108)+(1+1/109)
=109/105+110/109
=23431/11445
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Tính nhanh:
( 1 + 1/105 ) x ( 1 + 1/106 ) x ( 1+ 1/107 ) x ( 1+ 1/108 ) x ( 1+ 1/109 )
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( 1 + 1/105 ) x ( 1 + 1/106 ) x ( 1+ 1/107 ) x ( 1+ 1/108 ) x ( 1+ 1/109 )
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( 1 + 1/105 ) x ( 1 + 1/106 ) x ( 1+ 1/107 ) x ( 1+ 1/108 ) x ( 1+ 1/109 )
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(1+1/105)*(1+1/106)*(1+1/107)*(1+1/108)*(1+1/109)
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tính nhanh
763 x 28 + 1364 x 21 + 14 x 474 + 42 x 318 =............................................................................................................................................................................................................................................................................................................................................................................................................
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( 1 + 1/105 ) x ( 1 + 1/106 ) x ( 1/107 ) =....................................................................................................................................................................................................................................................................................................................................................................................................
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hãy nói ra 9 số có hàng trăm sau đây. a,100 ,200 ,300 400 500 600 700 800 900. b 1 2 3 4 5 6 7 8 9 . c 101 102 103 104 105 106 107 108 109
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Đề bài : Tính tích
1 x 3 x 5 x 7 x ... x 107 x 109 x 111
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