Please help answer either of the subquestions or both. will UPVOTE!!

Use SCHEME programming

The following patter of numbers is called Pascal's triangle. TOWO 1 1 1 1 row2 (12 The numbers at the edge of the triangle are all 1, and each number inside the triangle is the sum of the two numbers above it. a. [3 marks] Write a procedure that computes elements of Pascal's triangle given row and column indices. Any invalid indices should retum a value of 0. For example, (pascals ) + 1 (pascals 2 e) + 1 (pascals 2 1) + 2 (pascals 4 2) + 6 b. [7 marks] Using your solution to the previous part, write a procedure (print Triangle n) that prints n rows of Pascal's triangle to the screen. For example, (printTriangle 5) 11 121 1 3 3 1 14641 The following patter of numbers is called Pascal's triangle. TOWO 1 1 1 1 row2 (12 The numbers at the edge of the triangle are all 1, and each number inside the triangle is the sum of the two numbers above it. a. [3 marks] Write a procedure that computes elements of Pascal's triangle given row and column indices. Any invalid indices should retum a value of 0. For example, (pascals ) + 1 (pascals 2 e) + 1 (pascals 2 1) + 2 (pascals 4 2) + 6 b. [7 marks] Using your solution to the previous part, write a procedure (print Triangle n) that prints n rows of Pascal's triangle to the screen. For example, (printTriangle 5) 11 121 1 3 3 1 14641