Advertisements
Advertisements
प्रश्न
In a single throw of two dice, find the probability of an odd number as a sum.
उत्तर
The number of possible outcomes is 6 × 6 = 36.
We write them as given below:
1, 11, 21, 31, 41, 51, 6
2, 12, 22, 32, 42, 52, 6
3, 13, 23, 33, 43, 53, 6
4, 14, 24, 34, 44, 54, 6
5, 15, 25, 35, 45, 55, 6
6, 16, 26, 36, 46, 56, 6
n(S) = 36
E = Event of getting an odd number as a sum
= {(1, 2),(1, 4),(1, 6),(2, 1),(2, 3),(2, 5),(3, 2),(3, 4),(3, 6),(4, 1),(4, 3),(4, 5),(5, 2),(5, 4),(5, 6)(6, 1)(6, 3)(6, 5)}
n(E) = 18
Probability of getting an odd number as sum = `(n(E))/(n(S)) = 18/36 = 1/2`
APPEARS IN
संबंधित प्रश्न
A bag contains six identical black balls. A child withdraws one ball from the bag without looking into it. What is the probability that he takes out a black ball?
From 25 identical cards, numbered 1, 2, 3, 4, 5, ......, 24, 25; one card is drawn at random. Find the probability that the number on the card drawn is a multiple of 3.
A card is drawn from a well-shuffled pack of 52 cards. Find the probability that the card drawn is 5 of heart or diamond.
A card is drawn from a well-shuffled pack of 52 cards. Find the probability that the card drawn is jack or queen.
A bag contains 16 coloured balls. Six are green, 7 are red and 3 are white. A ball is chosen, without looking into the bag. Find the probability that the ball chosen is white.
A bag contains 3 red balls, 4 blue balls and 1 yellow ball, all the balls being identical in shape and size. If a ball is taken out of the bag without looking into it; find the probability that the ball is yellow.
From a well-shuffled deck of 52 cards, one card is drawn. Find the probability that the card drawn is a face card.
From a well-shuffled deck of 52 cards, one card is drawn. Find the probability that the card drawn is not a face card.
If P(E) = 0.59; find P(not E).
Two coins are tossed simultaneously 300 times and the outoomes are noted as :
Two tails : 83
Ole tail :140
No tai :77
Find the probabiity of Occurrence of each of these events.
