What expressions are equivalent to k/2 choose 2 answers

2k/4 and ((k/2)+(k/2))/2

Step-by-step explanation:

2k/4 = (2k/2)/(4/2) = k/2

((k/2)+(k/2))/2 = (2k/2)/2 = (k/1)/2 = k/2

Both simplify to k/2

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%