# Probability – 1 – 8

36. A bag contains 3 red, 4 white and 5 blue balls. All balls are different. Two balls are drawn at random. The probability that they are of different colour, is :

(a) 47/66
(b) 10/33
(c) 5/22
(d) none of these

EXPLANATION
No answer description available for this question. Let us discuss.

37. In order to get atleast once a head with probability ≥0.9, the number of times a coin needs to be tossed, is :

(a) 3
(b) 4
(c) 5
(d) none of these

EXPLANATION
No answer description available for this question. Let us discuss.

38. Odds 8 to 5 against a person who is 40 years old living till he is 70 and 4 to 3 against another person now 50 till he will be living 80. Probability that one of them will be alive next 30 years, is :

(a) 59/91
(b) 44/91
(c) 51/91
(d) 32/91

EXPLANATION
No answer description available for this question. Let us discuss.

39. In a certain town, 40% of the people have brown hair, 25% have brown eyes and 15% have both brown hair and brown eyes. If a person selected at random from the town, has brown hair, the probability that he also has brown eyes, is :

(a) 1/5
(b) 3/8
(c) 1/3
(d) 2/3

EXPLANATION
No answer description available for this question. Let us discuss.

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

EXPLANATION
No answer description available for this question. Let us discuss.

Be a Part of The New & Next

Share the Knowledge

General Knowledge Books

## -27% General Knowledge 2019 Price: INR 22.00 Was: INR 30.00 -35% General Knowledge Price: INR 141.00 Was: INR 216.00 -13% Objective General Knowledge Chapterwise Collection of 6250+ Questions Price: INR 257.00 Was: INR 295.00 Concise General Knowledge 2018 Price: Check on Amazon -10% General Knowledge 2018 (Old Edition) Price: INR 27.00 Was: INR 30.00 -37% Objective General Knowledge Price: INR 228.00 Was: INR 360.00 ‹›

 McqSeries.com is an online forum for multiple choice questions. This forum would be really-really helpful for those candidates who are preparing for examination conducted by Union Public Service Commission (like Civil Services Examination, Engineering Services Examination, Special Class Railway Apprentice, National Defence Academy, Combined Defence Services, etc.), Staff Selection Commission (like Combined Graduate Level, Junior Engineer, Food Corporation of India etc.), various public sector units (like DRDO, DMRC, BARC, BSNL, ONGC, etc.), Graduate Aptitude Test in Engineering, Indian Institute of Technology Entrance Examination etc. and many other national and state level examination.
Copy Protected by Chetan's WP-Copyprotect.