Question
?3 - (77.98 ÷ 6.09 + 10.12)2 +
(2.015 - 11.983)2 = 20.01 × (215.98(2/3) - √36.03) What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)Solution
ATQ, ?3 - (77.98 ÷ 6.09 + 10.12)2 + (2.015 - 11.983)2 = 20.01 × (215.98 (2/3) - √36.03) ?3 - (78 ÷ 6 + 10)2 + (25 - 12)2 ~ 20 × (216 (2/3) - √36) ?3 - (13 + 10)2 + (32 - 12)2 ~ 20 × (36 - 6) ? 3 - 232 + 202 ~ 20 × 30 ?3 ~ 600 + 529 - 400 ?3 ~ 729 ?3 ~ 9 3 ? ~ 9
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