Answer:
1/15
Step-by-step explanation:
7+3 = 10 items in the bag
P(grape) = grapes/total
3/10
No replacement
7 cherries 2 grapes = 9 items
P(grape) = grapes/total
2/9
P(grape, no replacement, grape) = 3/10*2/9
=1/15
Answer: 6 cm^2
Step-by-step explanation:
Answer:
f(5) = -6
Step-by-step explanation:
f(x) = -x - 1
f(5) = -5-1 = -6
Answer:
Step-by-step explanation:
58.6667
Answer:
Probability that they are the youngest is 0.000549
Step-by-step explanation:
Given
Number of students = 16
Selected students = 4
Let n = number of students
n = 16
Let r = selections
r = 4
We're interested in selecting 4 students out of 16; the keyword, selection means we're dealing with combination because order is not important.
So,
Solving for nCr
nCr = n!/((n-r)!r!)
16C4 = 16!/((16-4)!4!)
16C4 = 16!/(12!4!)
16C4 = 16 * 15 * 14 * 13 * 12!/(12!4!)
16C4 = 16 * 15 * 14 * 13 / 4 * 3 * 2 * 1
16C4 = 1820 ways
There are 1820 ways of selecting 4 students from a total of 1820.
Only one of these ways can the four of them be the youngest.
So, probability = 1/1820
Probability = 0.0005494506
Probability that they are the youngest is 0.000549 (approximately)
