If an event cannot occur, then its probability is
Which of the following cannot be the probability of an event?
∵ Probability of any event cannot be more than 1.
∴ 1.5 can not be the probability of any event.
∴ (a) is the answer.
An event is very unlikely to happen. Its probability is closest to
A coin is tossed twice. The probability of getting both heads is
Sample space - {HH, HT, TH, TT}
Number of total possible outcomes = 4
Number of favourable outcome (both heads) = 1
∴ Probability of getting both head = 1/4
The probability expressed as a percentage of a particular occurrence can never be
The probability that a non leap year selected at random will contain 53 Sunday's is
A non-leap year has 365 days
A year has 52 weeks. Hence there will be 52 Sundays for sure.
52 weeks = 52 x 7 = 364 days .
365– 364 = 1 day extra.
In a non-leap year there will be 52 Sundays and 1day will be left.
This 1 day can be Sunday, Monday, Tuesday, Wednesday, Thursday, friday, Saturday, Sunday.
Of these total 7 outcomes, the favourable outcomes are 1.
Hence the probability of getting 53 sundays = 1/7.
A fair dice is rolled. Probability of getting a number x such that 1 < x < 6, is
1, ∵ It is a sure event.
A die is thrown once, the probability of getting a prime number is
The sum of the probabilities of all elementary events of an experiment is p, then
The probability that a number selected at random from the numbers 1, 2, 3 ... 15 is a multiple of 4 is
The numbers that is a multiple of 4 present between 1-15 are 4,8,12.
total numbers between 1 to 15=15,
the probability of getting a number that is a multiple of 4= number of favourable outcomes of event e/ total number of outcomes.
=3/15
=1/5
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