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
Probability » Exercise - 130. From the word “POSSESSIVE”, a letter is chosen at random. The probability of it to be S is : (a) 3/10 (b) 4/10 (c) 3/6 (d) 4/6
Probability » Exercise - 14. The probability of obtaining an even prime number on each die, when a pair of dice is rolled is : (a) 0 (b) 1/3 (c) 1/12 (d) 1/36
Probability » Exercise - 15. 6 coins are tossed simultaneously . The probability of getting atleast 6 heads is : (a) 57/64 (b) 229/256 (c) 7/64 (d) 37/256
Probability » Exercise - 140. 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
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