Answer:
The probability of a correct guess on the first try is 0.000244 or 0.0244%.
Step-by-step explanation:
Given:
Number of digits in the pin code = 6
Number of keys in each digit = 4
So, in order to get the correct pin code, the key selected in each digit should be correct.
So, there will be only 1 correct key in each digit.
Now, probability of selecting a correct key in first digit is given as:
Now, there are 6 digits in the pin code and repetition is allowed. So, the probability of selecting the correct key in the remaining digits will also be equal to 0.25.
Therefore, the combined probability of selecting the correct pin code in the first try is the product of probabilities of selecting each correct key in each of the digits.
So,
Therefore, the probability of a correct guess on the first try is 0.000244 or 0.0244%.
Answer:
41 degrees
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
Applying the law of cosines
we have
A is the measure of the angle formed from the line from each lamppost to Bob
substitute
Answer:
the answer is 77
Step-by-step explanation:
A measures 32 and B measures 109 so you subtract 109 and 32 and your answer will be 77