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Vesna [10]
4 years ago
15

Type the correct answer in the box. Use numerals instead of words. For this item, any answers that are not whole numbers should

be entered as a decimal, rounded to the tenths place. Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. The probability that the locker code begins with a prime number is %. The probability that the last digit of the locker code is an odd number is %.
Mathematics
2 answers:
Colt1911 [192]4 years ago
7 0

Answer: prime number-40%, odd number 60%

Step-by-step explanation:I just took the test and got it right

marishachu [46]4 years ago
3 0

Answer:

Part A : 40%

Part B : 60%

Step-by-step explanation:

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9).

This means 5,6,7,8,9 a total of 5 numbers.

Now out of these 5 numbers only 2 are prime numbers i.e 5 and 7.

So, The probability that the locker code begins with a prime number is = \frac{2}{5}*100=40%

The probability that the last digit of the locker code is an odd number is=

\frac{3}{5}*100 =60%

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