HARD
JEE Main/Advance
IMPORTANT
Earn 100

A person buys eight packets of TIDE detergents. Each packet contains one coupon, which bears one of the letters of the word TIDE. If he shows all the letters of the word TIDE, he gets one free packet. If he gets exactly one free packet, then the number of different possible combinations of the coupons is

50% studentsanswered this correctly

Important Questions on Permutation and Combination

HARD
JEE Main/Advance
IMPORTANT
Mathematics for Joint Entrance Examination JEE (Advanced) Algebra>Chapter 7 - Permutation and Combination>Exercises>Q 92
The total number of ways in which n2 number of identical balls can be put in n numbered boxes (1, 2, 3,…,n) such that ith box contains at least i number of balls is
HARD
JEE Main/Advance
IMPORTANT
Mathematics for Joint Entrance Examination JEE (Advanced) Algebra>Chapter 7 - Permutation and Combination>Exercises>Q 93
Total number of ways in which 15 identical blankets can be distributed among 4 persons, so that each of them gets at least two blankets, is
HARD
JEE Main/Advance
IMPORTANT
Mathematics for Joint Entrance Examination JEE (Advanced) Algebra>Chapter 7 - Permutation and Combination>Exercises>Q 94
Number of ways in which 25 identical things be distributed among five persons, if each gets the odd number of things is
HARD
JEE Main/Advance
IMPORTANT
Mathematics for Joint Entrance Examination JEE (Advanced) Algebra>Chapter 7 - Permutation and Combination>Exercises>Q 95
Number of ways in which Rs 18 can be distributed among four persons such that nobody receives less than Rs 3 is
EASY
JEE Main/Advance
IMPORTANT
Mathematics for Joint Entrance Examination JEE (Advanced) Algebra>Chapter 7 - Permutation and Combination>Exercises>Q 96
The total number of ways of selecting six coins out of 20 one-rupee coins, 10 fifty-paisa coins, and 7 twenty-five paise coins is
MEDIUM
JEE Main/Advance
IMPORTANT
Mathematics for Joint Entrance Examination JEE (Advanced) Algebra>Chapter 7 - Permutation and Combination>Exercises>Q 97
The total number of positive integral solution of 15<x1+x2+x3≤20 is equal to
MEDIUM
JEE Main/Advance
IMPORTANT
Mathematics for Joint Entrance Examination JEE (Advanced) Algebra>Chapter 7 - Permutation and Combination>Exercises>Q 1
Number of ways in which 3 different numbers in A.P. can be selected from 1, 2, 3, …….n is
HARD
JEE Main/Advance
IMPORTANT
Mathematics for Joint Entrance Examination JEE (Advanced) Algebra>Chapter 7 - Permutation and Combination>Exercises>Q 2
Kanchan has 10 friends among whom two are married to each other. She wishes to invite five of them for a party. If the married couple refuse to attend separately, then the number of different ways in which she can invite five friends is