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Question

Mark (✓) against the correct answer
32-22×23-3=?

(a) 458
(b) 845
(c) 8135
(d) 1358

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Solution

(d) 1358

32-22×23-3=9-4×323 since ab-1=ba1
=5×3323 = 5×278 = 1358

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