Question
A can do a piece of work in 21 days and B in 28 days. If
they together work on it for 5 days, then the fraction of the work that is left is :Â ÂSolution
A = 21 days B = 28 days LCM of (A and B) = LCM of 21 and 28 = 84 units Efficiency of A = 4 units/day and B = 3 units/day Total = 4 + 3 = 7 units/day 5 days work of A and B is 7 × 5 = 35 units Remaining work = 84 - 35 = 49 units Rest work / total work = 49/84 Required Fraction = 49/84 = 7/12Â
23 45 89 155 ? 353
3, 10, 29, 66, ?
98, 122, 182, 278, 410, ?
In each of the following number series, one term is missing. Find the missing term.
3, 8, 15, 24, 35, ?
What should come in place of (?) question mark in the following number series.
4, 9, 19, 34, 54, ?
98, 89, 114, 50, 194, ?
15.975 ×27.825 + (76.01)² + 12.98×18.426 = ?+ (79.09)²
What will come in place of the question mark (?) in the following series?
4, 11, 32, 95, 284, 851, ?
16, 15, 24, -1, 48, ?
What will come in place of the question mark (?) in the following series?
112, 123, 144, 169, 190, ?
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