40. A six faced dice is biased that it is twice as likely to show an even number as an odd number when thrown. It is thrown twice. The probability that the sum of two numbers thrown is even, is :
(a) 1/12 (b) 1/6 (c) 1/3 (d) 2/3
Answer
Answer : (d)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Probability » Exercise - 120. 3 dice are thrown simultaneously. What is the probability of obtaining a total of 17 or 18 ? (a) 1/9 (b) 1/72 (c) 1/54 (d) none of these
Probability » Exercise - 111. If A & B are any two events, then the true relation is : (a) P (A ∩B) > P (A) + P (B) - 1 (b) P (A ∩B) < P (A) + P (B) (c) P (A ∩ B) = P (A) + P (B) − P (A ∪ B) (d) none of these
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Probability » Exercise - 128. A pair of fair dice is rolled together till a sum of either 5 or 7 is obtained. Then the probability that 5 comes before 7 is : (a) 1/5 (b) 2/5 (c) 4/5 (d) none of these