There are 10 red, 10 black, 10 white, and 10 gray marbles in a jar. If all the marbles are identical, what is the least number of marbles that must be drawn out in order to ensure that among the marbles drawn out, 5 marbles will be the same color? (A) 5
(B) 9
(C) 17
D) 40
(E) 41

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%

i think 5 miles per hour

step-by-step explanation: