Recent questions tagged mathematics

0 0 votes
0 0 answers
275
275 views
The following table shows the monthly income and various expenditures, of six friends A-F in absolute value or in percentage (in terms of monthly income) form. Some value...
0 0 votes
0 0 answers
300
300 views
The following table shows the monthly income and various expenditures, of six friends $\text{A-F}$ in absolute value or in percentage (in terms of monthly income) form. S...
1 1 vote
2 2 answers
628
628 views
What number would replace question mark (?) in the series given below?$1,4,11,26,57,120,247, ?$$424$$367$$255$$502$(Option $1[39781]) 1$(Option $2[39782]) 2$(Option $3[39...
1 1 vote
1 1 answer
5.5k
5.5k views
The second moment of a Poisson-distributed random variable is 2. The mean of the variable is ....My question on solving we get 2 values of lamda(ie mean) .One is -2 and t...
0 0 votes
0 0 answers
2.2k
2.2k views
How many ways are there to select four pieces of fruit from a bowl containing apples, oranges, and pears if the order in which the pieces are selected does not matter, on...
1 1 vote
0 0 answers
672
672 views
For the set N of natural numbers and a binary operation f : N x N → N, an element z ∊ N is called an identity for f, if f (a, z) = a = f(z, a), for all a ∊ N. Which of th...
To see more, click for the full list of questions or popular tags.