The answer is 0.08.
The word "is" in mathematics is another word for "equal to".
The word "of" in mathematics is another word for multiplication.
Let's keep the answer as x.
0.008 = 1/10 * x
1/10x = 0.008
x = 0.08
35 cards. 7 X 4 = 28. Add the 7 he gave to his friend, and you get 35.
P(brown hair) + P(blue eyes) - P(brown hair and blue eyes) + P(neither brown hair nor blue eyes) = 30
15 + 17 + 6 - P(brown hair and blue eyes) = 30
P(brown hair and blue eyes) = 38 - 30 = 8
Therefore, there are 8 students that have brown hair and blue eyes.
