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प्रश्न
If two coins are tossed, find the probability of the following event.
Getting no head ?
उत्तर
Sample Space (S) = {HH, HT, TT, TH}
∴ n(S) = 4
Event B: Getting no head
B = {TT}
∴ n(B) = 1
`therefore P(B) =(n(B))/(n(S))`
`= 1/4`
Hence, the probability of getting no head is `1/4.`
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संबंधित प्रश्न
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A bag contains 3 white, 5 black and 2 red balls, all of the same shape and size. A ball is drawn from the bag without looking into it, find the probability that the ball drawn
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In a single throw of a dice, find the probability of getting a number less than or equal to 4.
In a single throw of a dice, find the probability of getting 5.
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In the month of March 2019, Find the days on which the date is a multiple of 5. (see the given page of the calender)
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Event A : Even number on the upper face.
Event B : Odd number on the upper face.
Event C : Prime number on the upper face.
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Condition for event C : Number on the upper face is greater than 7 and tail on the coin.
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Two coins are tossed simultaneously. Complete the following activity to write the sample space and the given events A and B in the set form:
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Event B: To get no head.
Activity:
Two coins are tossed simultaneously.
∴ Sample space is
S = `{square, HT, TH, square}`
Event A: To get at least one head.
∴ A = `{square, HT, TH}`
Event B: To get no head.
∴ B = `{square}`
