Question

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

Answer 1

Answer:

Option A, C and D are correct.

Step-by-step explanation:

Option A is correct because if we take example of $(x+y)^3$ we get:

     1,2,1

   1,3,3,1

  1,4,6,4,1

So we can see that either we read left to right or right to left we are getting same row

Option B is not correct because When we take power zero it will occupy first row hence, $(x+y)^n$  is not given by nth row.

Option C is correct because adding adjacent terms on a will give us the term directly below look at the example in option A.

Option D is correct because nth row will give coefficients in the expansion of (x + y) n-1 since, zero will occupy first row hence, nth row will be n-1.

Answer 2

the correct answer is B,A,C. Letters may differ