SOLUTION: How many 3 digit no. Can be formed from the digit 3.4,5,7,8,9. How many of them are even?
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Question 1132765: How many 3 digit no. Can be formed from the digit 3.4,5,7,8,9. How many of them are even?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
How many 3 digit no. Can be formed from the digit 3.4,5,7,8,9.
--- If it's 3,4,5,7,8,9 and not 3.4:
6*6*6 = 216
---
333
334
335
337
338
339
-
343
344
345
347
348
349
-
etc
------------------
How many of them are even?
The units have to be 4 or 8.
6*6*2 = 72
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