Question

What is the result of this expression (in Scheme)?

(let ((x 10)
(y 10))
(- (* x y) y))

A)55

B)50

C) Error: Unable to Compute Value

D) 90

Answer 1

The Scheme expression evaluates to 90 after performing the operations within the let statement. So the correct answer is option D.

Step-by-step explanation:

The result of the Scheme expression (let ((x 10) (y 10)) (- (* x y) y)) is calculated by first evaluating the multiplication of x and y, and then subtracting y from the result. Since both x and y are bound to the value 10, the multiplication (* x y) equals 100. Then, you subtract y, which is 10, to get the final result, which is 90. Therefore, the correct answer is D) 90.