Answer:
3/4.
Step-by-step explanation:
Total number of ways to pick 3 digits from the 4 given digits = 4P3
= 4!/ 1! = 24 ways.
The odd numbers are formed when 7 is the last digit of the 3 digits and this will be in 6 numbers 247, 267, 427, 467, 647 and 627 . So there will be 24 - 6 = 18 even numbers.
So the probability of only even digits = 18/24 = 3/4.
