Question

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 %.

Answer 1

Answer: Part a: 40%

Part B: 60%

Step-by-step explanation: Took the Test

Answer 2

Part A : 40%

Part B : 60%

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 =
`(2)/(5)*100=40`%

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

`(3)/(5)*100 =60`%