exam Maths Puzzle Numerical Ability

How can 6,6,5,2 using the order of operations become 24?

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exam Other Question

(a+b)^2 b^2-a^2 a-b
----- x --------- x ------
a^2-b^2 a+b (a-b)^2

PLEASE GIVE ME STEP BY STEP INSTRUCTION...UR HELP IS GREATLY APPRECIATED MORE T A hospital staff member mixed a 65% disinfectant solution with a 15% disinfectant solution. How many liters of each were used to make 50 liters of a 37% disinfectant solution?