Neo Olympiad 6,7,8

Solve the equation: If 7x − 4 = 24, find x.

• 3

• 4

• 5

• 6

Simplify the expression: (2x²y)(3xy³) to what?

• 5x³y⁴

• 6x³y⁴

• 6x²y³

• 9x³y³

The sum of two consecutive even numbers is 54. What are those two numbers?

• 26 and 28

• 24 and 26

• 25 and 27

• 28 and 30

Given a = 3, b = 2. Calculate the value of a²b³.

• 36

• 72

• 54

• 60

Which of the following numbers is a prime number?

• 21

• 23

• 25

• 27

What is the LCM (Least Common Multiple) of 14 and 18?

• 84

• 90

• 126

• 252

Simplify the expression: (x + 3)(x − 3) to what?

• x² + 6x + 9

• x² − 9

• x² − 6x + 9

• x² + 9

If 3x + 5 = 17, what is the value of 6x − 2?

• 14

• 18

• 22

• 26

What is the difference between the cube of 5 and the cube of 4?

• 36

• 61

• 89

• 125

Find the smallest 3-digit number that is divisible by 9.

• 100

• 102

• 108

• 111