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Question

Multiply :
(i) 56 and 89(ii) 27 and 149(iii) 78 and 4(iv) 367 and 928(v) 710 and 815(vi) 32 and 73

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Solution

(i) 56 and 89=5×86×9=5×43×9=2027(ii) 27 and 149=2×(14)7×9=2×(2)1×9=49(iii) 78 and 4=(7)×48×1=(7)×12×1=72=312(iv) 367 and 928=36×(9)(7)×28=9×(9)(7)×7=8149=8149=13249(v) 710 and 815=(7)×(8)10×15=(7)×(4)5×15=2875(vi) 32 and 73=3×(7)(2)×3=1×(7)(2)×1=72=72=112


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