Question
If one child has half the work efficiency of an adult,
determine the duration required for 8 children to construct a wall, which is 60% as large as the one built by 12 adults in 15 days.Solution
Let the efficiency of each man be '2x' units/day So, total work = 2x X 12 X 15 = '360x' units And efficiency of a child = 2x ÷ 2 = 'x' units/day So, required time = (360x X 0.6) ÷ (8 X x) = 27 days Hence, option a.
Find the wrong number in the series given below.
7, 22, 68, 217, 625, 1880
Select the number from among the given options that is wrong in the following series.
22, 30, 46, 78, 146, 270
Find the wrong number in the given series.
60, 65, 75, 95, 125, 195, 355Â Â
Arrange the following words in a logical and meaningful order.
1. Monkey
2. Elephant
3. Rat
4. Fly
5. Lion
Find the wrong number in the given series.
17, 17, 51, 255, 1789, 16065
A series is given with two wrong terms. Select the wrong term in the given series.
32, 43, 58, 73, 92, 117, 144
A series is given with one wrong term. Select the correct alternative from the given ones that will complete the series.
33, 44, 66, 110, 199, 374
Select the wrong term in the series.
44, 47, 41, 50, 38, 53, 40
5, 15, 30, 135, 405, 1215, 3645
Find the wrong number in the series given below.
5, 16, 50, 157, 463, 1394
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