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Determine the number of 3 digit numbers in base 10 having at least one 5 and at most one 3.

  1. Determine the number of 3 digit numbers in base 10 having at least one 5 and at most one 3.

Grade:11

2 Answers

Jayakrishna Natarajan
39 Points
7 years ago
No of 3 digit numbers is 900
Out of 900, 260 numbers have at least one digit as 5.
Now out of the 260, there is only 1 number which does not satisfy the demands of the question.. That number is 335.. Rest all numbers(259 of them) satisfy the condition..
Therefore the answer is 259
 
 
manmath
49 Points
7 years ago
hii,
 
No of 3 digit numbers is 900
Out of 900, 260 numbers have at least one digit as 5.
Now out of the 260, there is only 1 number which does not satisfy the demands of the question.. That number is 335.. Rest all numbers(259 of them) satisfy the condition..
Therefore the answer is 259

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