Year: 2016
Stage:
Competitors: .... v ....
Riddle
1.You can say I am some kind of triangle.
2. I am in a way an isosceles triangle.
3. To be precise, I am a symmetric arrangement of numbers.
4. I consist of various rows of numbers each of which begins and ends with the first natural number.
5. My numbers are the coefficients in a binomial expansion.
I am somebody's triangle.
Who am I?
Pascal's triangle
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