A die is rolled twice. What is the probability of getting a sum equal to 9?

Created: 6 years ago | Updated: 3 years ago

2/3

2/9

1/6

1/9

None of these

Mercantile Bank Ltd Mercantile Bank Ltd - Management Trainee Officer - 31.07.2015 গণিত সম্ভাব্যতা (Probability)

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best des

Total number of out comes possible when a die is rolled = 6
Hence, total number of out comes possible when a die is rolled twice, n(s) = 6 $\times$ 6 = 36
E = Geting a sum of 9 when the two dice fell = {(3,6), (4,5), (5,4), (6,3)}
Hence n (E) = 4
P(E) = $\frac{n (E)}{n (S)} = \frac{4}{36} = \frac{1}{9}$

6 years ago

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Md Azizur Rahman

Founder of Satt

সম্ভাব্যতা (Probability)

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A die is rolled twice. What is the probability of getting a sum equal to 9?

সম্ভাব্যতা (Probability)

Related Question

1. ২০ সদস্যবিশিষ্ট একটি ফুটবল দল থেকে একজন অধিনায়ক ও একজন সহ-অধিনায়ক কতভাগে নির্বাচন করা যাবে?

3. A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ?

4. In a box , there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ?

5.
A fair coin is thrown in the air four times. If the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss ?

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A die is rolled twice. What is the probability of getting a sum equal to 9?

সম্ভাব্যতা (Probability)

Related Question

1. ২০ সদস্যবিশিষ্ট একটি ফুটবল দল থেকে একজন অধিনায়ক ও একজন সহ-অধিনায়ক কতভাগে নির্বাচন করা যাবে?

3. A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ?

4. In a box , there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ?

5. A fair coin is thrown in the air four times. If the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss ?

Mercantile Bank Ltd

Promotion

Download Our Mobile Apps

Satt policy

Main Features

Subscribe our newsletter

5.
A fair coin is thrown in the air four times. If the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss ?