COMEDK · Maths · 4. Permutation Combination
The total number of numbers greater than 1000 but less than 4000 that can be formed using 0,2,3,4 (using repetition allowed) are
- A 125
- B 105
- C 128
- D 625
Answer & Solution
Correct Answer
(C) 128
Step-by-step Solution
Detailed explanation
Since, numbers should be greater than 1000 but less than 4000 . \(\therefore\) The first digit must be either 2 or 3 . It is clear that required numbers must be 4 digit numbers. Now, there are four choices \((0,2,3,4)\), for each unit, ten and hundred place digit.…
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