Ok so, 15 of them know how to play whist (I have no idea what that is) and 20 of them know how to play dominoes, 5 of them do not. So, if you add up 20+15=35, take off 10 35-10=25 so it must mean that 10 is the answer. (Also if you add 5 to that 25+5=30)
The Answer is 10
Answer:
sqrt(sqrt(x))
Step-by-step explanation:
The problem statement tells you how to do it: take the square root, then the square root of that, using the square root function twice and making the result of one the argument of the other.
