Question

Can you write 18 by using four times four?

Answer 1

Given : 4 times 4

To find : using mathematical operations to get 18

Solution:

There can be many solution to such problem

4 * √4 * √4 + √4

= 4 * 2 * 2 + 2

= 16 + 2

= 18

or

4 × 4 + 4/√4

= 16 + 4/2

= 16 + 2

= 18

or

4 * 4 + ∛(4 + 4)

= 16 + ∛8

= 16 + 2

= 18

or

4^{\sqrt{4} } + \frac{4}{\sqrt{4}}4

4

+

4

4

= 4² + 4/2

= 16 + 2

= 18