A license plate is 3 capital letters (of English alphabets) followed by 3 digits. If all possible license plates are equally likely, the probability that a plate has either a letter palindrome or a digit palindrome (or both), is

A code consists of two letters of the alphabet followed by 5 digits .How many such codes are possible ?

For many years,Delhi used 3letters followed by 3 digits on its automobile license plates.

The licence plates for vehicles registered in Delhi consist of 3 letters (of English alphabet) followed by 1,2,3 or 4 digits. The letter on the extreme right has to be 'D'. For the 1-digit number plates, the number 0 is not allowed. For other, the digits and the letters, of course can repeat, but the numbers should be significant. Determine the possible number of licence plates.

The Licence plates for vehicles registered in Delhi consist of 3 letters (of English alphabet) followed by 1, 2, 3 or 4 digits. The letter on the extreme right has to be ‘D’. For the 1-digit number plates, the number 0 is not allowed. For others, the digits and the letters, of course can repeat, but the numbers should be significant. Determine the possible number of licence plates.

A code word consists of three letters of the English alphabet followed by two digits of the decimal system. If neither letter nor digit is repeated in any code word, then the total number of code words, is

A code word consists of three letters of the English alphabet followed by two digits of the decimal system. If neither letter nor digit is repeated in any code word, then the total number of code words, is

A typical PIN (personal identification number) is a sequence of any four symbols chosen from the 26 letters in the alphabet and the ten digits. If all PINs are equally likely, what is the probability that a randomly chosen PIN contains a repeated symbol?

A typical PIN (personal identification number) is a sequence of any four symbols chosen from the 26 letters in the alphabet and the ten digits.If all PINs are equally likely,what is the probability that a randomly chosen PIN contains a repeated symbol?