Answer:
The answer is 2/4.
Step-by-step explanation:
The fraction represented is 5/8. 2/4 can be made into 4/8, which is less than 5/8.
Answer:
Probability of both people being allergic: 0.81%.
Probability of at least one being allergic: 17.19%
Step-by-step explanation:
If the probability of one person being allergic to pollen is 9%, the probability of two people selected being both allergic is:
0.09 * 0.09 = 0.0081 = 0.81%
The probability of at least one being allergic can be calculated with 1 minus the probability of both not being allergic.
If the probability of being allergic is 9%, the probability of not being allergic is (1 - 0.09) = 0.91 = 91%.
So, the probability of both not being allergic is:
0.91 * 0.91 = 0.8281
Then, The probability of at least one being allergic is:
1 - 0.8281 = 0.1719 = 17.19%
Answer:
B
Step-by-step explanation:
There are 4 pairs, so any answer with less or more is wrong.
The first pair is (1,3), i.e., you always write (x,y) with x first, y second, and so on.
That leaves answer B.
Answer:
Step-by-step explanation:
Since the distance between them is 2, it implies
0.04x - 0.03x = 2
0.01x = 2
x = 2/0.01
x = 200
Count the number of positive integers less than 100 that do not contain any perfect square factors greater than 1.
Possible perfect squares are the squares of integers 2-9.
In fact, only squares of primes need be considered, since for example, 6^2=36 actually contains factors 2^2 and 3^2.
Tabulate the number (in [ ])of integers containing factors of
2^2=4: 4,8,12,16,...96 [24]
3^2=9: 9,18,....99 [11]
5^2=25: 25,50,75 [3]
7^2=49: 49,98 [2]
So the total number of integers from 1 to 99
N=24+11+3+2=40
=>
Number of positive square-free integers below 100 = 99-40 = 59
