Question

Make 20 with (4,4,5,5)????

Answer 1

4x5+20x(5-1)=20x1+20

Answer 2

4x5=20*

Answer 3

5*4/5-4 or 5*4*(5-4) or .........

Answer 4

\[4 \times 5\times(5 - 4) \]

Answer 5

or \[\sqrt{4*5*4*5}\]

Answer 6

Dynamic programming algorithm.

Answer 7

Or\[4^2 - 4^2 + 5^2 - 5\]

Answer 8

So that is in order too! ^

Answer 9

nice 2x

Answer 10

In a similar spirit,\[(4 - 4) + 5^2 - 5\]

Answer 11

4^2+4 +5-5
but i guess, we used 2 in 'square'