Arrangements and Combinations · Lucas Theorem and the Sierpiński Triangle (Optional)
Lesson 11
Problem. How many entries in row \(100\) of Pascal's triangle are not divisible by \(5\)?
3 points
Arrangements and Combinations · Lucas Theorem and the Sierpiński Triangle (Optional)
Problem. How many entries in row \(100\) of Pascal's triangle are not divisible by \(5\)?