SOLUTION: A four digit ID card is to be formed from the digits 1, 2, 3, 4 How many different ID cards can we form if it should start with an even digit and the last 2 are identical ?

Algebra.Com
Question 1182939: A four digit ID card is to be formed from the digits 1, 2, 3, 4 How many different ID cards can we form if it should start with an even digit and the last 2 are identical ?
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
2 ways for the first*4 ways for the second*10 ways for the 3rd and fourth
80 ways
Answer by ikleyn(52787)   (Show Source): You can put this solution on YOUR website!
.

From the context,  repetition of the digits is allowed.


Then there are 2 ways for the first digit * 4 ways for the second digit * 4 ways for the third and fourth digits = 


    2*4*4 = 32 ways.    ANSWER

Solved.



RELATED QUESTIONS

The digits 0, 1, 2, 3,and 4 are to be used in a three-digit ID card. How many different... (answered by jim_thompson5910)
The digits 0,1,2,3,4 are to be used in a four digit ID card. How many different cards are (answered by ikleyn)
how many different id cards can be made if there are four digits on a card and no digit... (answered by ikleyn,Alan3354)
A company ID card contains 7 digits, such as 92, 71, 042. How many different ID... (answered by checkley79)
A company ID card contains 7 digits, such as 92-71-042. How many different ID numbers can (answered by Alan3354)
How many different ID cards can be made if there are 6 digits on a card and no digit can... (answered by flame8855)
in a company, ID cards have 5 digit numbers. a. can be formed if repetition of the digit (answered by Fombitz)
How many different ID cards can be made if there are six digits on a card and no digit... (answered by benni1013)
How many different ID cards can be made if there are eight digits on card and no digit... (answered by stanbon)