1.AN ORDINARY CUBE HAS FOUR BLANK FACES,ONE FACE MARKED 2 ANOTHER MARKED 3.THEN THE PROBABILITY OF OBTAINING A TOTAL OF EXACTLY 12 IN 5 THROWS?

2.IN A CLASS OF 125 STUDENTS 70 PASSES IN MATHEMATICS,55 IN STATISTICS AND 30 IN BOTH.THE PROBABILITY THAT A STUDENT SELECTED AT RANDOM FROM THE CLASSES,HAS PASSED IN ONLY ONE SUBJECT IS        A)13/25                           B)3/25

                          C)17/25                            D)8/25

 

PLEASE TELL ME THE SOLUTION SIR.