Alocker combination contains four digits. each digit can be from 0 through 9. what is the probability that a 4-digit combination chosen at random is made up of 4 digits that are all greater than 6 if each digit can be repeated? 1. find the total number of possible outcomes. 1. (10)(10)(10)(10) 2. find the number of favorable outcomes. 2. (3)(3)(3)(3) 3. use the formula 3. p (event) = number of favorable outcomes number of possible outcomes

 .81%

Step-by-step explanation:

Since each digit has to be greater than 6, that leaves only 7, 8, & 9 as successful digits.

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870