Question
A brother and a sister appear for an interview against
two vacant posts in an office. The probability of the brother’s selection is 1/5 and that of the sister’s selection is 1/3.What is the probability of only one of them is selectedSolution
Probability of only one of them selected = 1/5×2/3 +4/5×1/3 =2/15 +4/15 =6/15 =2/5
More Probability Questions
A-5,  A,  35,  52, 78, 115
30, 42, 48, 54, 65, 81, 126
- Find the wrong number in the given number series.
25, 34, 18, 34, 9, 46 Find the wrong number in the given number series.
32, 48, 72, 108, 162, 245
Find the wrong number in the given number series.
1600, 800, 1200, 400, 100 , 12.5
547, 594, 640, 691, 741, 792
Find the wrong number in the given number series.
26, 38, 60, 110, 206, 398
75, 450, 225, 1330, 675, 4050
Find the wrong number in the given number series.
8, 12, 23, 40, 66, 103
62, 79, 98, 119, 142, 165
Relevant for Exams:
