EASY
11th Maharashtra Board
IMPORTANT
Earn 100

How many numbers between 100 and 1000 have the digit 7 exactly once?

50% studentsanswered this correctly

Important Questions on Permutations and Combinations

HARD
11th Maharashtra Board
IMPORTANT
Mathematics and Statistics (Arts & Science) Part 2>Chapter 3 - Permutations and Combinations>EXERCISE
How many four digit numbers will not exceed 7432 if they are formed using the digits 2,3,4,7 without repetition?
HARD
11th Maharashtra Board
IMPORTANT
Mathematics and Statistics (Arts & Science) Part 2>Chapter 3 - Permutations and Combinations>EXERCISE
If numbers are formed using digits 2,3,4,5,6 without repetition, how many of them will exceed 400?
HARD
11th Maharashtra Board
IMPORTANT
Mathematics and Statistics (Arts & Science) Part 2>Chapter 3 - Permutations and Combinations>EXERCISE
How many numbers formed with the digits  0,1,2,5,7,8 will fall between 13 and 1000 if digits can be repeated?
EASY
11th Maharashtra Board
IMPORTANT
Mathematics and Statistics (Arts & Science) Part 2>Chapter 3 - Permutations and Combinations>EXERCISE
A school has three gates and four staircases from the first floor to the second floor. How many ways does a student have to go from outside the school to his classroom on the second floor?
HARD
11th Maharashtra Board
IMPORTANT
Mathematics and Statistics (Arts & Science) Part 2>Chapter 3 - Permutations and Combinations>EXERCISE
How many five-digit numbers can be formed using the digits 0,1,2,3,4,5 which  are divisible by 5 and digits are not repeated?
EASY
11th Maharashtra Board
IMPORTANT
Mathematics and Statistics (Arts & Science) Part 2>Chapter 3 - Permutations and Combinations>EXERCISE

Evaluate 8!

EASY
11th Maharashtra Board
IMPORTANT
Mathematics and Statistics (Arts & Science) Part 2>Chapter 3 - Permutations and Combinations>EXERCISE

Evaluate 10!

EASY
11th Maharashtra Board
IMPORTANT
Mathematics and Statistics (Arts & Science) Part 2>Chapter 3 - Permutations and Combinations>EXERCISE

Evaluate 10!-6!