Permutations 1

How many ways we can arrange 12 students in 5 chairs?

• 3991680

• 95040

• 12

• None of the above

What is the value of 5! ?

• 5×(4!)

• 120

• 5×4×3!

• All of the above

How many ways n students can sit in n chairs?

• n ways

• n! Ways

• (n-1) ways

• None of the above

Find the number of Permutations of 4 dissimilar things taken 3 at a time?

• 24

• 4

• 6

• None of the above

If the letters of the word PRISON are permuted in all possible ways and the words thus formed are arranged in dictionary order, find the rank of the word PRISON

• 720

• 438

• Both 720 and 438

• None of the above

If the letters of the word MASTER are permuted in all possible ways and the words are arranged in dictionary order, then find rank of MASTER.

• 129

• 252

• 256

• 257

Find the sum of all four digited numbers that can be formed using the digits 1, 2, 4, 5, 6 without repetition.

• 4,79,952

• 4,32,000

• 432

• None of the above

Find the sum of all four digited numbers that can be formed using the digits 1, 3, 5, 7, 9 without repetition.

• 66,600

• 4,32,000

• 6,66,600

• None of the above

Find the sum of all four digited numbers that can be formed using the digits 0, 2, 4, 7, 8 without repetition.

• 5,59,944

• 5,45,958

• 23,331

• None of the above

Find the number of numbers that are greater than 4000 which can be formed using the digits 0, 2, 4, 6, 8 without repetition.

• 168

• 5,33,280

• 3,99,960

• None of the above