Division and Distribution of Objects

IMPORTANT

Division and Distribution of Objects: Overview

This topic covers concepts, such as, Division into Groups in Combinations, Divisors of an Integer, Distribution of 'N' Identical Objects among 'R' Distinguishable Groups & Distribution of 'n' Different Objects among 'r' Distinguishable Groups etc.

Important Questions on Division and Distribution of Objects

HARD
IMPORTANT

How many different ways can 15 Candy bars be distributed among Ram, Shyam, Ghanshyam and Balram, if Ram can not have more than 5 candy bars and Shyam must have at least two. Assume all Candy bars to be alike.

HARD
IMPORTANT

Find the number of positive integers that are divisors of at least one of the numbers  10 1 0 ; 18 11 ; 157 .

HARD
IMPORTANT

The number of integral solutions for the equation x+y+z+t=20, where x,y,z,t-1, is

MEDIUM
IMPORTANT

How many divisors of 21600 are divisible by 10 but not by 15?

EASY
IMPORTANT

The total number of ways in which 5 balls of different colours can be distributed among 3 persons so that each person gets atleast one ball is

EASY
IMPORTANT

Total number of different ways in which 7 different prizes be awarded to 5 students in such a way that each student has at least one prize is P. Find the value of P+1002

MEDIUM
IMPORTANT

Let A represents the number of factors of 1800 and B represents the number of ways in which 1800 can be resolved into two coprime factors. Find the value of A-B2.

MEDIUM
IMPORTANT

In how many ways can 12 different things be equally distributed among 4 persons? If they are divided into 4 groups instead of giving away to 4 persons, what will be the number of ways?

MEDIUM
IMPORTANT

In how many different ways can 15 distinct objects be divided

into 3 groups of 5 objects each;

MEDIUM
IMPORTANT

In how many different ways can 15 distinct objects be divided
in 3 groups of 4,5 and 6 objects;

MEDIUM
IMPORTANT

A person has in his bag 14 notes of Rs.100 each, 9 notes of Rs. 50 each, 4 notes of Rs. 20 each and 7 notes of Rs. 10 each. In how many different ways can be donate to a poor fund?

MEDIUM
IMPORTANT

There are 4 ten-rupee, 5 five-rupee and 3 two-rupee notes. How many selections of at least one ten-rupee and one two-rupee notes are possible?

MEDIUM
IMPORTANT

Find the number of factors (except 1) of 420, excepting the number itself.

MEDIUM
IMPORTANT

In how many different ways the number 1440 be expressed as the product of two factors (considering 1 as a factor)?

MEDIUM
IMPORTANT

How many different factors (except 1) are there of the numbers 

1155

MEDIUM
IMPORTANT

How many different factors (except 1) are there of the numbers 

113400 

MEDIUM
IMPORTANT

How many different factors (except 1) are there of the numbers 
546 

HARD
IMPORTANT

A Committee of 12 is to be formed from 9 women and 8 men. In how many ways this can be done if at least 5 women have to be included in a committee? In how many of these committees

The women are in majority?

HARD
IMPORTANT

If the number of ways in which four distinct balls can be put into two identical boxes such that no box remains empty is equal to k, then k is

HARD
IMPORTANT

Let P denotes the ways in which persons A, B & C will get 1, 2, 5 objects respectively out of 10 distinct objects. If P=λ10!1! 2! 5!, then 4λ=