SOLUTION: How many positive, four-digit numbers have 3 as their first digit and 4 or 5 as their third digit?

Question 511873: How many positive, four-digit numbers have 3 as their first digit and 4 or 5 as their third digit?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How many positive, four-digit numbers have 3 as their first digit and 4 or 5 as their third digit?----
---
1st digit: 3 ways
2nd digit: 10 ways
3rd digit: 2 ways
4th digit: 10 ways (if by 4th you mean the units digit; if you mean the 1000 digit the # of ways is 9)
----
Answer: 3*10*2*10 = 600
OR
3*10*2*9 = 540
===================
Cheers,
Stan H.
RELATED QUESTIONS
How many positive two-digit numbers have the square of an integer as the product of their (answered by Edwin McCravy)

how many 2 digit even numbers have an odd number as the sum of their digits? (answered by Fombitz)

How many 3- digit even numbers are there that have 24 as the sum of their digits? (answered by KMST)

How Many 5 digit numbers are possible if no digit can be repeated (and 0 as the first... (answered by Fombitz)

A. How many 10-digit phone numbers in the 972 area code have at least one repeated digit? (answered by Edwin McCravy)

What is the largest four-digit number such that the second digit is one-fourth of the... (answered by RAY100)

Four-Digit Number. How many four-digit numbers can be formed using the digits 0, 1, 2, 3, (answered by MathLover1,jilalbenkad)

How many three-digit numbers have the hundreds digit equal to 3 and the units digit equal (answered by Alan3354)

how many two digit numbers with their tens digit greater than their unit digit,have the... (answered by Edwin McCravy)