The probability of a student scoring 75% in class work is 0.64, and the probability of a student scoring 85% is 0.45.

event a: the student scores 75%.
event b: the student scores 85%.

the probability of a student scoring 85% in class work, given that they have already scored 75% in class work, is 0.55. the probability of a student scoring 75% in class work, given that they have already scored 85% in class work, is 1.
which statement is true?

The probability of a student scoring 75%, given that they have already scored  85% in class work is 1.

Step-by-step explanation: Given,

and

.

Also,

If the student already scored 85%, the it is sure that he/she will definitely score 75%. Hence, the statement that the probability of a student scoring 75% in a class work, given that they already scored 85% is 1 is a true statement.

So, the second statement is true.

there would be 365 different 4 digit numbers

step-by-step explanation:

i belive that it is 365 because i asked google