Question
√31684.11 × √728.9 – (19.02)2 = ? ×
4.99 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
√31684.11 × √728.9 – (19.02)2 = ? × 4.99 178 × 27 – 361 = ? × 5 4806 – 361 =? × 5 ? = 889
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