A nine - digit number is formed using the digits 1, 2, 3, 5 and 7. The probability that the product of all digits is always 1920 is

A four digit number is formed using the digits 1, 2, 3, 5 with no repetitions. Write the probability that the number is divisible by 5.

A four digit number is formed using the digits 1, 2, 3, 5 with no repetitions. Write the probability that the number is divisible by 5.

A 2 digit number is formed using the digits 2, 3, 5, 8 and 9 without repetition. What is the probability that the digits used are 3 and 9?

A 2 digit number is formed using the digits 2, 3, 5, 8 and 9 without repetition. What is the probability that the digits used are 3 and 9?

A seven digit number is formed using digits 3,3,4,4,4,5,5. The probability, that number so formed is divisble by 2, is:

A five digit number (having all different digits) is formed using the digits 1,2,3,4,5,6,7,8 and 9. The probability that the formed number either begins or ends with an odd digit,is equal to

If a four digit number is formed by using the digits 1,2,3 and 5 with no repetition, then the probability that the number is divisible by 5 is :

Four digit numbers are formed using the digits 0, 2, 3,5 without repetition. The probability of such a number divisible by 5 is

A 4 digit number is randomly picked from all the 4 digit numbers, then the probability that the product of its digit is divisible by 3 is :

A 4 digit number is randomly picked from all the 4 digit numbers, then the probability that the product of its digit is divisible by 3 is :