Question

Fill in the smallest digit to make the number divisible by: (i) by 5 : 7164__, 32197__ (ii) by 3 : 1__43, 47__05, __316 (iii) by 6 : __428, 9__52

Answer 1

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(i) by 5 : 71640, 321970

(ii) by 3 : 1143, 47205, 2316

(iii) by 6 : 4428, 9252

Answer 2

Answer:

Consider, (9/16x4/12)+(9/16x-3/9) Recall the distributive property, a×(b+c) = a×b + a×c (9/16x4/12)+(9/16x-3/9) = (9/16) × (4/12 − 3/9)                                            = (9/16) × [(1/3)  − (1/3)]                                            = (9/16) ×0 = 0