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SHORT ANSWER4 marks
Let be the set of all seven-digit numbers formed using digits 0, 1, 2 (first digit non-zero). Number of elements such that at least one of the digits 0 and 1 appears exactly twice is:
Answer
762
JEE Advance · 2025
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Let be the set of all seven-digit numbers formed using digits 0, 1, 2 (first digit non-zero). Number of elements such that at least one of the digits 0 and 1 appears exactly twice is:
Answer