7. Find the following using relevant property.
(1) 784x117-784 x 17
(iii) 93078x1786-93078 x 786
(v) 322 x 678 + 205 x 322 +322 117
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7i) 784(117-17)
=784 ×100
=78400
ii) 93078(1786-786)
=93077×100
=9307700
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