Question
(8.6 × 8.6 + 4.8 × 4.8 + 17.2 × 4.8) ÷
(8.62 – 4.82 ) = ? ÷ 19 What will come in the place of question mark (?) in the given expression?Solution
ATQ, (8.6 × 8.6 + 4.8 × 4.8 + 17.2 × 4.8) ÷ (8.62 – 4.82 ) = ? ÷ 19 (8.62 + 4.82 + 2 × 8.6 × 4.8) ÷ {(4.8 + 8.6)(8.6 – 4.8)} = ? ÷ 19 (8.6 + 4.8)2 ÷ {(8.6 + 4.8) × 3.8} = ? ÷ 19 (13.4 ÷ 3.8) × 19 = ? ? = 67
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