Question

in how many different ways can 5 examination papers be arranged in row so that the best and worst paper always come together
​

Answer 1

Answer:

1 time, 4 times or 5 times

Answer 2

Answer:

Number of ways of arranging 10 exam papers =

10

P

10

=10! ways.

Let us consider the best and worst paper as one group and all other papers as different..

Number of ways of arranging 9 groups is

9

P

9

=9!= ways.

Best and worst paper can themselves be arranged in

2

P

2

=2!=2 ways.

Total number of arrangements with best and worst papers together =9!×2 ways.

Hence, total number of arrangements with them not together =10!−2×9!=8×9! ways.

Step-by-step explanation:

that's your answer please mark me brainlist answer okkkkkkkkk bro