8. The number of three-digit odd positive integers is
Answers
Answered by
0
Answer:
I thik this ianswer is 397..
Answered by
0
Answer:
288
Unit digit -1,3,7,9
Tenth digit -0,1,2,3,4,6,7,8,9
100th digit -0,1,2,3,4,6,7,8,9 100th digit cannot contain 0 as then it will become a 2 digit number so only 8 possibilities here.
The total possible ways =4*9*9=324 --so this becomes 4*9*8 =288 and there is no redundancy
Since in the unit digit there are 4 integers, there exist 9*4=36 redundant 3 digits integer.
therefore 324-36=288 different 3 digit integer is the answer
Similar questions