Question
'M' alone finishes a project in 30 days. 'M' and 'N'
together can complete the same project in 16(2/3) days. How many days would 'N' need to do the project alone?Solution
ATQ,
Let 16(2/3) = 50/3 Let the total work be 150 units (LCM of 30 and 50/3) Efficiency of M = 150 ÷ 30 = 5 units/day Combined efficiency of M and N = 150 ÷ (50/3) = 9 units/day So, efficiency of N = 9 - 5 = 4 units/day Therefore, time taken by N = 150 ÷ 4 = 37.5 days
Find the wrong term in the series given below.
38, 44, 32, 50, 24, 56, 20
A series is given with two wrong terms. Select the wrong term in the given series.
32, 43, 58, 73, 92, 117, 144
5, 15, 30, 135, 405, 1215, 3645
Find the wrong number in the given series.
5, 3, 6, 17.25, 64.75
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
Find out the Wrong number in the following number series.
2, 123, 204, 256, 278, 287
In this question, one term in the number series is wrong. Find out the wrong term.
130, 135, 143, 154, 168, 183, 205
In the following question, select the wrong number from the given alternatives.
52, 26, 26, 52, 208, 1644
Select the number from among the given options that is wrong in the following series.
22, 30, 46, 78, 146, 270
Select the wrong term in the series.
10, 19, 23, 52, 61, 133, 149
