find the product of the following . i) (-3)× 2×(-5). ii) 5×(-7)×8. iii). 3×(-8)×(-4). iv). (-20)×12×(-10). v) (-9)×(-35)×0. vi). (-3)×(-5)×(-7). vii). (-3)×(-6)×(-9)×(-12). viii) (-2)×(-4)×(-6)×(-8).
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Solution :
(i) (-3)× 2×(-5)
= (-3)(-5) * 2
= 15 *2
=30
(ii) 5 (-7)*8
=40*-7
=-280
(iii) 3×(-8)×(-4)
= 3*32
= 64
(iv) (-20)×12×(-10).
= 200 * 12
= 2400
(v) (-9)×(-35)×0.
= -9 * 0
= 0
(vi) (-3)×(-5)×(-7)
= 15 * -7
= -105
(vii) (-3)×(-6)×(-9)×(-12)
= 18 * 108
= 1944
(viii) (-2)×(-4)×(-6)×(-8).
= 8 * 48
= 384
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