How many 3-digit numerals end with a digit that represents a prime number?

Answer/Solution

400

Steps/Work

prime digits 2,3,5 and 7.
three digit numbers _ _ _
1st place can be filled in 4 ways
2nd place can be filled in 10 ways
3rd place can be filled in 10 ways
Total=4*10*10=400
Ans : E

General Calculator / Auto Solver

How many - digit numerals end with a digit that represents a prime number?

Calculated Answer

400

Step by Step Solution

In order to solve problem, you must evaluate n₀ * 100 + 100.

n₀ =	3

n₀ * 100 + 100
Evaluate n₀ * 100 = 300
300 + 100
Evaluate 300 + 100 = 400
400
The answer to the problem and the result of n₀ * 100 + 100 is 400

Quiz

Answer/Solution

Steps/Work

General Calculator / Auto Solver

Calculated Answer

Step by Step Solution