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digits

GATE CSE & IT · Probability & Counting · 1995-2017

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Rosen — Discrete Mathematics and Its Applications

Discrete structures, counting, relations, graph theory

The probability that a $k$-digit number does NOT contain the digits 0, 5, or 9 is :

The probability that a number selected at random between $$100$$ and $$999$$ (both inclusive ) will not contain the digit $$7$$ is