There are 20 people among whom two are sisters. Find the number of ways in which we can arrange them around a circle so that there is exactly one person between the two sisters.
2! x 19!
18!
18! x 2!
19!
Quiz Recommendation System API Link - https://fresherbell-quiz-api.herokuapp.com/fresherbell_quiz_api
# | Quiz |
---|---|
1
Discuss
|
Six boys and 4 girls are to be seated in two separate rows with five chairs each, such that two particular girls are always together and all the girls are not in the same row. In how many ways can they be seated?
Solution |
2
Discuss
|
In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together?
Solution |
3
Discuss
|
How many 4-letter words with or without meaning, can be formed out of the letters of the word, 'LOGARITHMS', if repetition of letters is not allowed?
Solution |
4
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 |
5
Discuss
|
12 person are seated at a round table. Number of ways of selecting 2 persons not adjacent to each other is
Solution |
6
Discuss
|
How many words, with or without meaning, can be formed using all letters of the word EQUATION using each letter exactly once?
Solution |
7
Discuss
|
A speaks truth in 75% cases and B in 80% of the cases. In what percentage of the cases are they likely to contradict each other, narrating the same incident?
Solution |
8
Discuss
|
How many words can be formed from the letters of the word "SIGNATURE" so that vowels always come together.
Solution |
9
Discuss
|
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?
SolutionPerson 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 |
10
Discuss
|
If
SolutionAnswer :1/2 |
# | Quiz |
Copyright © 2020 Inovatik - All rights reserved