Number of numbers
Probability
Level
pending
Let's consider integers from 1 (one) to 10000 (ten thousand) inclusive, if you count numbers that contain digits 4 or 5 and those do not contain 4 and 5. Which one will be high?
Numbers that contain digits 4 or 5 are high
Numbers that doesn't contain digits 4 and 5 are high
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1 solution
Numbers from 1 (one) to 10000 (ten thousand). Let's consider x1 and x2 be any digit from 1 to 9 Doesn't contain digits 4(x1) and 5(x2) : 4096 Contain digits 4(x1) and 5(x2) : 5904