Which of the following statements regarding Pascal's triangle are correct?

A. the first and last numbers of a row are always 1.

B. the nth row gives the coefficients in the expansion of (x+y) ^n-1.

C. the nth row gives the coefficients in the expansion of (x+y) ^n.

D. each number not at the end of a row, is the sum of the numbers that are directly to its right and left, in the row below.

Question

Mathematics

Avery

30 August, 23:34

Which of the following statements regarding Pascal's triangle are correct?

A. the first and last numbers of a row are always 1.

B. the nth row gives the coefficients in the expansion of (x+y) ^n-1.

C. the nth row gives the coefficients in the expansion of (x+y) ^n.

D. each number not at the end of a row, is the sum of the numbers that are directly to its right and left, in the row below.

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Answers (1)

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Miles Chan · Answer 1

A. the first and last numbers of a row are always 1.

B. the nth row gives the coefficients in the expansion of (x+y) ^n-1.

D. each number not at the end of a row, is the sum of the numbers that are directly to its right and left, in the row below.