Digits (0) से (9) तक repetition बिना (6)-digit even numbers में non-zero even last digit case का count क्या होगा?
Using digits (0) to (9) without repetition, what is the count for (6)-digit even numbers with a non-zero even last digit?
Explanation opens after your attempt
A. \(4\cdot8\cdot{}^{8}P_4\)
Concept
There are (4) non-zero even choices for the last digit and (8) remaining non-zero choices for the first digit. In exams handle first and last restrictions together.
Why this answer is correct
The correct answer is A. \(4\cdot8\cdot{}^{8}P_4\). There are (4) non-zero even choices for the last digit and (8) remaining non-zero choices for the first digit. In exams handle first and last restrictions together.
Exam Tip
Last digit के (4) non-zero even choices हैं और first digit के (8) non-zero choices बचते हैं। परीक्षा में first और last restrictions को साथ संभालें।
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