Worksheetsprobability
Total questions: 11
Worksheet time: 8mins
A box contains 50 bolts and 150 nuts. On checking the box, it was found that half of the bolts and half of the nuts are rusted. If one item is chosen at random, find the probability that it is rusted.
1/2
1/4
3/4
1/3
IfP (event E) = 0.47, then find P(not E).
0
1.47
0.53
1.53
The probability of guessing the correct answer to a certain question is x/ 2.If probability of not guessing the correct answer is 2 /3 then find x
1/3
2/3
1/4
2/5
A die is thrown six times and number on it is noted as given below :
Compute the probability of getting a prime number.
0
1/4
2/6
1/2
In a medical examination of students of a class, the following blood groups are recorded :
A student is selected at random from the class. Find the probability that he/she has blood group B.
1/5
3/5
2/5
3/10
Two coins are tossed 1000 times and the outcomes are recorded as below :
Based on this information, find the probability for at most one head.
4/3
2/7
4/5
5/4
In a throw of a die, find the probability of not getting 4
1/6
5/6
2/3
1/3
In a class, there are x girls and y boys, a student is selected at random, then find the probability of selecting a boy.
y/(x+y)
x/(x+y)
(x+y)/y
(x+y)/x
Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes ;
If the three coins are simultaneously tossed again, compute the probability of 2 heads coming up
8/20
9/25
23/500
28/500
750 families with 3 children were selected randomly and the following data recordedIf a family member is chosen at random, compute the probability that it has no boy child
4/25
1/25
3/25
2/15
Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes
If the three coins are simultaneously tossed again, compute the probability of getting less than 3 tails.
180/200
82/200
68/200
150/200
