#090722-03

For a Poisson distribution, P(X=x) is maximum when x = 5 or x = 6. What is the variance of this distribution?

#090722-04

In a binomial distribution, variance was found to be exactly half of the mean. If n=6, find probability of getting at least 4 successes.

#090722-05

Sum of all page numbers of a book was found to be 11282. However, it was later found that page number 21-22 was torn out from the book and was not counted in totals. What is the total number of pages in the book?

#110722-01

First term of a GP is positive. Its third term is negative. Its common ratio is -

#110722-02

How can we ge frequency from a histogram?

#110722-03

In an arithmetic progression, 4th term is the square of the first term. The terms are the roots of the equation x^2-110x+1000 = 0 Find 5th term of this AP.

#110722-04

CLI increased from 134 to 189, and salary of a person increased from 7,50,000 to 11,40,000. What will happen to his standard of living?

#120722-01

You can invest Rs. 10000 among two shares, A and B. A can give 8% return and B can give 10%. You can invest max 6000 in either of the stocks. What will be your maximum profit?

#120722-02

5 MCQs are put daily on this Telegram channel for first 5 days. For next 5 days, 6 MCQs are posted daily. For next 5 days, 7 are posted and so on. How many total MCQs will be posted over 60 days?

#130722-01

A person needs Rs. 5,00,000 after 4 years for a particular payment. How much should he invest annually, starting from this year end, so mee the obligation, if he can get 6% return?

#130722-02

How many ways are there to arrange 5 identical % signs and 3 identical & sign in a row

#130722-03
*Difficult*
Standard deviation of the two roots of the equations 2x^2-940x+c=0 is 175 Find 'c'

#160722-01
Select incorrect statement

#160722-02

Find correlation coefficient between x and y - x: 5, 8, 6, 2, 4, 7, 0 y: 7, 9, 1, 0, 5, 6, 2

#180722-01

There are approx 1.92 lakh students appearing for a particular exam. A gets 99.62 percentile in the exam. How many students have scored more than him (Approx)?

#190722-01

In a language, 'It is awesome' is 'o toko fi' 'you are awesome' is 'ler gut o' 'They are going' is 'kit gut bot' 'You must get going' is ' bot joke jim ler' What can be 'They must get it'?

#230722-01

A has 4 friends and B, A's spouse has 5 friends. How many ways are there to invite 4 guests to the party so that at least one of A and B's friends are there?

Distributions
Probability of getting an easy question in paper is 0.4. What is the probability that out of 10 questions, none will be easy?