4. Find the product , using suitable properties.
a. 1673 x 99 - [ - 1673]
b. [-8] x 64 x [- 125]
c. 625 x [-35]+ [ - 625] x65
d. 50 x [ - 23 ] + 50 x[ - 17 ]
e. ( -30) x (-19) + 30
f. ( - 64) x 1
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f. -64
e. 600
d. -2000
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1
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