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a)
...1494 chia hết cho 9, 1495 chia hết cho 5, 1496 chia hết cho 4 nên
...A=1494.1495.1496 chia hết cho 9.4.5=180 (đpcm)
b)1494 chia hết cho 9, 1495 chia hết cho 5, 1496 chia hết cho 11 nên
...A=1494.1495.1496 chia hết cho 9.5.11=495 (đpcm)
a) Ta có: 1494:9
1495:5
1496:4
=> 1294.1495.1496:9.5.4
=>1494.1495.1496:180
b)Ta có: 1494:9
1495:5
1496:11
=>1494.1495.1496:9.5.11
=>1494.1495.1496:495
CM chia hết cho 495 làm tương tự biết 495=11x9x5 nha bn
b1/
ta có : 180=4x5x9
mà 1494 chia hết cho 9
1495 chia hết cho 5
1496 chia hết cho 4
=> 1494 x 1495x 1496 chia hết cho 180
1) ta có : 180= 9 x 5 x 4
Mà 1494 chia hết cho 9; 1495 chia hết cho 5 và 1496 chia hết cho 4.
=> 1494 x 1495 x 1496 chia hết cho 180.
2)Ta có 495= 9 x 5 x 11
Mà 1494 chia hết cho 9; 1495 chia hết cho 5 và 1496 chia hết cho 11.
=> 1494 x 1495 x 1496 chia hết cho 495.
k mình nha !!!
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Vì 1496 = 1100 + 330 + 66 =11.100 + 11.30 + 11.6 chia hết cho 11
theo cm trên A chia hết cho 5 và 9
=> A chia hết cho 5*9*11 =495
1)...1494 chia hết cho 9, 1495 chia hết cho 5, 1496 chia hết cho 4 nên
...A=1494.1495.1496 chia hết cho 9.4.5=180 (đpcm)
2)1494 chia hết cho 9, 1495 chia hết cho 5, 1496 chia hết cho 11 nên
...A=1494.1495.1496 chia hết cho 9.5.11=495 (đpcm)
1) ta có : 180= 9 x 5 x 4
Mà 1494 chia hết cho 9; 1495 chia hết cho 5 và 1496 chia hết cho 4.
=> 1494 x 1495 x 1496 chia hết cho 180.
2)Ta có 495= 9 x 5 x 11
Mà 1494 chia hết cho 9; 1495 chia hết cho 5 và 1496 chia hết cho 11.
=> 1494 x 1495 x 1496 chia hết cho 495.
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