9. There are nine slips of paper numbered from 1 to 9 in a bag. Four slips are randomly selected without replacement to form a 4
1 answer:
Answer:
3024 numbers
336 numbers
Step-by-step explanation:
There are nine slips of paper numbered from 1 to 9 in a bag. Four slips are randomly selected without replacement to form a 4-digit number.
First digit is selected in 9 ways
now we have only 8 papers
second digit is selected in 8 ways
third digit is selected in 7 ways
fourth digit is selected in 6 ways
4 digit numbers = numbers
first digit is selected in only one way
second digit is selected in 8 ways
third digit is selected in 7 ways
fourth digit is selected in 6 ways
4 digit numbers = numbers
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Step-by-step explanation:
We can observe from the table that the value of independent variable and then the values of function on that variable are given.
So,
<u>f(5) = 6</u>
As the value of function at x=5 is 6
<u>If f(x) = 4 then x = 7</u>
The value of function is 4 only on x=7 so the answer is x = 7
When the inverse is taken, the inputs become output and the outputs become inputs
The value of inverse will be 5 because in original function 5 is input and 6 is output when this will be reversed for inverse, the output will be 5 for 6
Now,
Lastly
The reverse rule of input and output will be used. The reverse function will generate 7 at input 4.