Select the correct combination of mathematical signs that can sequentially replace the ‘*’ signs and balance the given equation.
15 * 9 * 64 * 8 * 80 = 63
15 × 9 + 64 ÷ 8 – 80 = 63 15 × 9 + 8 – 80 = 63 135 + 8 – 80 = 63 135 – 72 = 63 63 = 63
If the sum of upstream and downstream speed is 20 km/hr and the speed of the current is 5 km/hr. Then find time taken to cover 45 km in downward?
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(√3364+ √484) – √2916÷ √1296 × √36 ÷ √64 = ?
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