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Work done by all the three members in 1 hour = 1/5 + 1/10 + 1/25 = (10+5+2)/50 = 17/50 part of the work ∴ Time taken by them to complete the work = 50/17 hrs ∴ Time taken by the leader = 50/17 hrs = 3 hrs (approx.)
120, 125, 140, 165, 210, 245
2, 4, 16, 48, 240, 1440, 10080
5, 13, 41, 185, 1111, 8149
Find the wrong number in given number series.
2556, 2613, 2734, 2841, 3012, 3221
-2, 0, 8, 32, 64, 66
171, 86, 87, 132, 266, 668
1, 18, 44, 81, 131, 198
123, 155, 198, 246, 301, 363