Pc & c 2

How many 4-digit numbers can be formed from digits 1–9, if no digit is repeated?

• 3024
• 1500
• 4000
• 2048

How many ways can the letters of the word “FACTOR” be arranged so that vowels are always together?

• 120
• 360
• 480
• 240

How many 5-digit numbers can be formed using digits 0–9 if repetition is allowed and the number is even?

• 45000
• 30000
• 50000
• 40000

How many ways can 5 boys and 4 girls sit in a row so that no two girls sit together?

• 28800
• 57600
• 14400
• 43200

A lock has digits 0–9. How many 4-digit codes can be formed if repetition is not allowed and the code must start with an even digit?

• 2520
• 4800
• 3600
• 1024

From 12 students, a committee of 4 is to be chosen. In how many ways if two particular students must always be together?

• 60
• 45

• 90
• 120

In how many ways can the letters of SUCCESS be arranged?

• 540
• 420
• 360
• 480

From 10 books, 4 are to be arranged on a shelf. Find number of arrangements if 2 particular books must not be together.

• 5120
• 4704

• 2048
• 4368

Two dice are thrown. Find probability that sum is 8.

• 1/12
• 1/6
• 5/36
• 7/36

A bag has 5 red, 3 blue balls. Two balls drawn at random. Find probability both are red.

• 2/7
• 1/2
• 5/14
• 3/14