credit cards place a three-digit security code on the back of cards.what is the probability that a code starts with the number 7

So the numbers on the credit card can start with any single-digit number

So it could start with;
0
1
2
3
4
5
6
7
8
Or 9

We are looking for the odds of it starting with a 7

There is only one 7, so the numerator is 1
There are then nine other possible numbers it could be, and counting the number 7, there is a total of ten different possibilities, so 10 is the denominator

So the odds of the card starting with a 7 is
1/10

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bhoopendrasisodiya34 bhoopendrasisodiya34 · Answer 2 · 2022-03-04T07:05:08+01:00

The probability of that the security code credit card, back of card starts with the number 7 is 1/10 or 10%

What is probability?

Probability of an event is the ratio of number of favorable outcome to the total number of outcome of that event.

As, the probability of an event can not be more than the number 1.

The credit cards place a three-digit security code on the back of cards. This three-digit number can be any combination of number between the number 0-9.

As the probability that a code starts with the number 7 has to be find out. Hence, we have only one favorable outcome, which is number 7.

Now, the total number between 0-9 are 10 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9). Hence, the total number of outcome for this problem is 10.

As, the probability of an event is the ratio of number of favorable outcome to the total number of outcome of that event. Thus. the probability of that a code starts with the number 7 is,

[tex]P=\dfrac{1}{10}\\P=10\%[/tex]

Hence, the probability of that the security code credit card, back of card starts with the number 7 is 1/10 or 10%.

Learn more about the probability here;

https://brainly.com/question/24756209