Difficult Round Quiz Bee - IMD

Solve for x: 2x+5=15.

• 3

• 4

• 5

• 6

What is the value of 3^4?

• 27

• 81

• 64

• 125

Find the sum of the first 20 natural numbers.

• 190

• 200

• 210

• 220

If 5x=45, what is x?

• 5

• 7

• 8

• 9

What is the next term in the sequence: 2, 4, 8, 16, __?

• 20

• 24

• 32

• 40

The area of a square is 49 cm². What is its side length?

• 5 cm

• 6 cm

• 7 cm

• 8 cm

If a triangle has angles 45° and 90°, what is the measure of the third angle?

• 30°

• 35°

• 45°

• 50°

If 8^x = 64, find x.

• 1

• 2

• 3

• 4

Simplify: 10!÷8!

• 80

• 100

• 110

• 90

What is the square root of 196?

• 10

• 11

• 12

• 13