Advent calendar 2022
16 December
Noel writes the integers from 1 to 1000 in a large triangle like this:
1 | ||||||
2 | 3 | 4 | ||||
5 | 6 | 7 | 8 | 9 | ||
10 | 11 | 12 | 13 | ... |
The rightmost number in the row containing the number 6 is 9.
What is the rightmost number in the row containing the number 300?