Question
5 boys and 3 girls are to be seated on chairs arranged in a
row. If the arrangement is made at random, find the probability that no two girls will be seated next to one another.Solution
8 people can be seated on 8 chairs in 8! ways.
No two girls will be seated next to one another, so the arrangement would be like:
__ B __ B __ B __ B __ B __
5 boys can be seated at 5 places in 5! Ways. After this, 3 girls can be seated in the remaining 6 places in 6 P 3  ways.
Favorable outcomes= 5! XÂ 6 P 3 .
Probability = (5! x 6!)/(3! x 8!) = 5/14
The price of an article is increased by 20%. Further, there is a tax of 5% on the increment. If the article costs ₹ 1,331 to the customer, then what ...
A man loses 20% of his money. After spending 25% of the remaining amount, he has ₹480 left. What is the amount of money he originally had?
Which of the following is not a type of muscle tissue?
Find the surface area of the smallest cube that can perfectly fit a sphere of volume 4500Ï€ cm3 inside it. Â
Assertion (A): Aurangzeb released Shahu from the prison shortly before Aurangzeb died in 1707.
Reason (R): Zulfiqar pointed that Shahu’s retu...
Dr. Shankarbaba Pundlikrao Papalkar is known for his dedication to improving the lives of:
India’s first pure green hydrogen plant commissioned at which place?
In the following question, select the wrong number from the given alternatives .
53, 60, 74, 95, 123, 155
Closure compensation eligibility requires:
Which of the following are considered as a basic structure of the Indian Constitution?
1. Social Justice
2. Free and fair elections
...
