Abank assigns random 4-digit numbers for atm access codes. in each code, no digit is repeated. use combinations to find the number of ways that 4 digits can be chosen from 10 digits, if order is not important. what is the probability that edmund is assigned a code with the digits 6, 7, 8, and 9 in any order

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.