Answer:
B
Step-by-step explanation:
because the numbers 0-9 consist of 10 numbers,
having a 70% chance of success means that out of the 10 numbers, 7 are correct.
thus, choice B is correct as it have 7 numbers in it
(rmb to count "0" as a number!)
There are 10 numbers from 0 to 9
x - number of numbers that represent a success
The probablity of success: [tex]\dfrac x{10}[/tex]
[tex]\dfrac x{10}=70\%\\\\\dfrac x{10}=\dfrac{70}{100}\\\\\dfrac x{10}=\dfrac{7}{10}\\\\x=7[/tex]
there are 7 numbers from 0 to 6
