Please select a subject first
Advertisements
Advertisements
If 15Cr : 15Cr − 1 = 11 : 5, find r.
Concept: undefined >> undefined
If n +2C8 : n − 2P4 = 57 : 16, find n.
Concept: undefined >> undefined
Advertisements
If 28C2r : 24C2r − 4 = 225 : 11, find r.
Concept: undefined >> undefined
If nC4 , nC5 and nC6 are in A.P., then find n.
Concept: undefined >> undefined
If 2nC3 : nC2 = 44 : 3, find n.
Concept: undefined >> undefined
If 16Cr = 16Cr + 2, find rC4.
Concept: undefined >> undefined
If α = mC2, then find the value of αC2.
Concept: undefined >> undefined
Two finite sets have m and n elements. The number of elements in the power set of first set is 48 more than the total number of elements in power set of the second set. Then, the values of m and n are:
Concept: undefined >> undefined
In a class of 175 students the following data shows the number of students opting one or more subjects. Mathematics 100; Physics 70; Chemistry 40; Mathematics and Physics 30; Mathematics and Chemistry 28; Physics and Chemistry 23; Mathematics, Physics and Chemistry 18. How many students have offered Mathematics alone?
Concept: undefined >> undefined
Suppose \[A_1 , A_2 , . . . , A_{30}\] are thirty sets each having 5 elements and \[B_1 , B_2 , . . . , B_n\] are n sets each with 3 elements. Let \[\cup^{30}_{i = 1} A_i = \cup^n_{j = 1} B_j = S\] and each element of S belong to exactly 10 of the \[A_i 's\]and exactly 9 of the\[B_j 's\] then n is equal to
Concept: undefined >> undefined
Two finite sets have m and n elements. The number of subsets of the first set is 112 more than that of the second. The values of m and n are respectively
Concept: undefined >> undefined
From a group of 15 cricket players, a team of 11 players is to be chosen. In how many ways can this be done?
Concept: undefined >> undefined
How many different boat parties of 8, consisting of 5 boys and 3 girls, can be made from 25 boys and 10 girls?
Concept: undefined >> undefined
In how many ways can a student choose 5 courses out of 9 courses if 2 courses are compulsory for every student?
Concept: undefined >> undefined
In how many ways can a football team of 11 players be selected from 16 players? How many of these will
include 2 particular players?
Concept: undefined >> undefined
In how many ways can a football team of 11 players be selected from 16 players? How many of these will
exclude 2 particular players?
Concept: undefined >> undefined
There are 10 professors and 20 students out of whom a committee of 2 professors and 3 students is to be formed. Find the number of ways in which this can be done. Further find in how many of these committees:
a particular professor is included.
Concept: undefined >> undefined
There are 10 professors and 20 students out of whom a committee of 2 professors and 3 students is to be formed. Find the number of ways in which this can be done. Further find in how many of these committees:
a particular student is included.
Concept: undefined >> undefined
There are 10 professors and 20 students out of whom a committee of 2 professors and 3 students is to be formed. Find the number of ways in which this can be done. Further find in how many of these committees:
a particular student is excluded.
Concept: undefined >> undefined
How many different products can be obtained by multiplying two or more of the numbers 3, 5, 7, 11 (without repetition)?
Concept: undefined >> undefined
