A bank gives each new customer a 4 digit code number which alllows the new customer to create their own password. The code number is assigned randomly from the digits 1,3,5,and 7. No digit is repeated. what is the probablity that the code number for a customer will begin at 7?

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

5/12, or 5: 12

step-by-step explanation:

answer: 193

explanation:

200-7 = 193