Problem 148: Exploring Pascal's triangle
We can easily verify that none of the entries in the first seven rows of Pascal's triangle are divisible by 7:
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1 1 6 15 20 15 6 1
However, if we check the first one hundred rows, we will find that only 2361 of the 5050 entries are not divisible by 7.
Test
{{test}}Console output