Question
Two people, A and B, working separately can sanitize a
building in 6 and 10 hours, respectively. They work in stretches of one hour alternately. If A begins at 8 a.m., then when will the work be finished?Solution
A                          B 6                          10               30                        (Total work) 5                           3            -Efficiency Working fashion ® (A, B, A, B.) 2 hours ® 8 units  6 hours ® 24 units 7 hours ® 29 units 8 hours ® 1/ 3 hours ® 30 units Total time ® 22/3 hours  Þ Work will finish.
420Â Â Â Â 342Â Â Â Â Â 272Â Â Â Â Â 212Â Â Â Â Â 156Â Â Â Â 110
...Find the wrong number in the given number series.
5, 10, 20, 40, 85, 1601, 18, 44, 81, 131, 198
216, 432, 144, 288, 96, 191, 64
- Find the wrong number in the given number series.
18, 34, 66, 114, 178, 266 - Find the wrong number in the given number series.
12, 21, 5, 38, 2, 71 Â -2, 0, 8, 32, 64, 66
- Find the wrong number in the given number series.
13, 24, 17, 28, 21, 40 Find the wrong number in the given number series.
1, 8, 27, 65, 125, 21634, 51, 85, 119, 185, 221Â
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