The number of seven digit integers, with sum of the digits equal to 10 and formed by…
Mathematics · JEE Advanced · NTA Exams — Permutations and Combinations
The number of seven digit integers, with sum of the digits equal to 10 and formed by using the digits 1, 2 and 3 only, is
- 55
- 66
- 77
- 88
Answer
(B) 66
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