EASY
11th CBSE
IMPORTANT
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How many 3-digit numbers are there, with distinct digits, with each digit odd?

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Important Questions on Permutations

EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 16 - Permutations>EXERCISE 16.2>Q 28
How many different numbers of six digits each can be formed from the digits 4,5,6,7,8,9 when repetition of digits is not allowed?
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 16 - Permutations>EXERCISE 16.2>Q 29
How many different numbers of six digits can be formed from the digits 3,1,7,0,9,5 when repetition of digits is not allowed?
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 16 - Permutations>EXERCISE 16.2>Q 30
How many four digit different numbers, greater than 5000 can be formed with the digits 1,2,5,9,0 when repetition of digits is not allowed?
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 16 - Permutations>EXERCISE 16.2>Q 31
Serial numbers for an item produced in a factory are to be made using two letters followed by four digits ( 0 to 9). If the letters are to be taken from six letters of English alphabet
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 16 - Permutations>EXERCISE 16.2>Q 32
A number lock on a suitcase has 3 wheels each labelled with ten digits 0 to 9. If opening of the lock is a particular sequence of three digits with no repeats, how many such sequences will be possible? Also, find the number of unsuccessful attempts to open the lock.
EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 16 - Permutations>EXERCISE 16.2>Q 33
A customer forgets a four-digit code for an Automatic Teller Machine (ATM) in a bank. However, he remembers that this code consists of digits 3,5,6 and 9. Find the largest possible number of trials necessary to obtain the correct code.
EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 16 - Permutations>EXERCISE 16.2>Q 34
In how many ways can three jobs I,II and III be assigned to three persons A, B and C if one person is assigned only one job and all are capable of doing each job?
HARD
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 16 - Permutations>EXERCISE 16.2>Q 35
How many four digit natural numbers not exceeding 4321 can be formed with the digits 1,2,3 and 4, if the digits can repeat?