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The sum property of the binomial coefficients also explains the presence of some interesting numbers in Pascals triangle. 11the sum property of binomial coefficients:

1 4 6 4 1 1 5 10 10 51 1 6 1520 15 6 1 1 7 21 35 35 21 7 1

Use the sum of binomial coefficients to solve this answer above. Thank you.

The sum property of the binomial coefficients also explains the presence of some interesting numbers in Pascal's triangle. 11.1.3 Explain why the third diagonal from the left in the triangle, namely 1, 3, 6, 10, 15, 21,..., consists of the triangular numbers
the sum property of binomial coefficients:
1 4 6 4 1 1 5 10 10 51 1 6 1520 15 6 1 1 7 21 35 35 21 7 1
0 0
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04 onal Une an lO 5 CM 2 A3 і, 3, 6 , Ю ,15,21,28 , haku,

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