A1=1, B1=2, A2=2
C1 = 2
C2 = 3*(B1-A1) = 3*(2-1) = 3*1 = 3
C3 = СРЗНАЧ(A1:B2) = (A1+B1+A2+B2)/4 = (1+2+2+3)/4 = 8/4 = 2
Ответ: 2