Test Your Skills
A) In how many ways can 6 girls and 2 boys be arranged in a row
(a) without restriction?
(b) such that the 2 boys are together?
(c) such that the 2 boys are not together?
B) How many numbers greater than 1000 can be formed with the digits 3,4,6,8,9 if a digit cannot occur more than once in a number?
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| Answers | ||||
|---|---|---|---|---|
| A) (mn+1)/2 | (B) 75 | |||