Prime Numbers & Factors

2+3 = ?

• 5

• 3

• 4

• 11

How many factors for 72 and what is their sum?

• 6,40

• 8,60

• 12,195

• 12, 100

What will be the remainder when a prime number (greater than 3) is divided by 6 ?

• 5

• 1

• 5 or 1

• None

Which of the following is prime number?

• 323

• 143

• 149

• 247

What is the smallest 4 digit prime number?

• 1001

• 1003

• 1007

• None

How many prime numbers are there less than 50?

• 12

• 15

• 20

• 25