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Probability

Short Answer Type

231. What is the probability of throwing a number greater than 4 with an ordinary die, faces are numbered from 1 to 6.

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232.

A die in the shape of tetrahedron has four faces on which 3, 4, 6 and 8 are written. The die is rolled once. Find the probability’ of getting

(i)    a prime number.
(ii)    a number less than 6.
(iii)    a number greater than 8.
(iv)    a number between 4 and 8.

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233.

A die is thrown once. Find the probability of getting
(i) a number less than 3.
(ii) a number greater than 4.
(iii) a number which is divisible by 2 and 3 both.

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234.

A fair die is tossed. List the sample space. State the probability of the favourable event.
(i) a number greater than 3 appears.
(ii) a number 3 appears.

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235.

An unbiased die is thrown. Find the probability of getting
(i) a number less than 5.
(ii) a number greater than 5.

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236.

A die is thrown once. What is the probability of getting a number other ghan 3.
Problems Based on Two Dice

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237. Two dice are thrown. Find the probability that a multiple of 2 occurs on one dice and a multiple of 3 occurs on other.

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238. Find the probability of throwing (a) 3, (b) an even number with an ordinary six faced dice.

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239. Two dice are thrown simutaneously. Find the probability of getting six as the product.

Solution not provided.

Ans. $1 over 9$

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240. In a single throw of two dice, what is the probability of (i) two aces (ii) at least one ace (iii) a total of 7 (iv) one dice come up with five and the other with six.

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