TS EAMCET · Maths · Permutation Combination
The number of natural numbers less than 1000 in which no digit is repeated is
- A 729
- B 738
- C 792
- D 836
Answer & Solution
Correct Answer
(B) 738
Step-by-step Solution
Detailed explanation
The natural numbers less than 1000 are of three digit, two digit and one digit number. Three digit. Since all digits must be distinct than the number of ways of filling hundredth place is 9 (as \(0 \mathrm{can}\) not be at this place), the number of ways of filling tenth and…
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