A person tosses an unbiased coin. When head turns up, he gets Rs.8 and tail turns up he loses Rs.4. If 3 coins are tossed, what is probability that he gets a profit of Rs.12?
3/8
5/8
3/4
1/8
Person will get profit of Rs 12 only when there is 2H (Head) and 1T (Tail)
H + H + T = 12
8 + 8 + (-4) = 12
Total outcome of 2 head and 1 tail = 23 = 8
i.e (T, H, TH, HT, HH, HHT, HTH, THH)
Total event with 2H and 1 T is 3
therfore probability = 3/8
Quiz Recommendation System API Link - https://fresherbell-quiz-api.herokuapp.com/fresherbell_quiz_api
| # | Quiz |
|---|---|
|
1
Discuss
|
Four letters are selected from the word “CAPAME” and are rearranged to form four letter words. How many words can be formed?
Solution |
|
2
Discuss
|
If (n + 2)! = 2550 (n!); find ’n’
Solution |
|
3
Discuss
|
From a pack of 52 playing cards, two cards are drawn together at random. Calculate the probability of both the cards being the Kings.
Solution |
|
4
Discuss
|
A coin is tossed 5 times. What is the probability that head appears an odd number of times?
Solution |
|
5
Discuss
|
If C(n, 7) = C(n, 5), find n
Solution |
|
6
Discuss
|
In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?
Solution |
|
7
Discuss
|
A teacher has to choose the maximum different groups of three students from a total of six students. Of these groups, in how many groups there will be included in a particular student?
Solution |
|
8
Discuss
|
Ten participants are participating in a competition. In how many ways can the first three prizes be won?
Solution |
|
9
Discuss
|
In a simultaneous throw of two dice, what is the probability of getting a total of 7?
Solution |
|
10
Discuss
|
A, B, C, D and E sit on five chairs all of which are facing north. C will sit only on the leftmost chair and B will not sit anywhere to the left of A. In how many ways they can be seated?
Solution |
| # | Quiz |
Copyright © 2020 Inovatik - All rights reserved