;; Implement (isosceles par) to return #t when exactly two of its arguments are #t: i par (isosceles par) ---- ;; TTTF ;; TFT T ;; FTTT ;; FFTF ;; TTFT ;; T F F F ;; FTF F ;; F FF F Type signature: (isosceles boolean boolean boolean) -> boolean (define (isosceles p q r) ("Replace everything in these parentheses with your code"))