Find a value of k so that the matrix A =

K<-NA
A<- matrix(c(1, 2, 1, 2, 0, 1, 2, 3, K), nrow = 3, ncol = 3)
A
##      [,1] [,2] [,3]
## [1,]    1    2    2
## [2,]    2    0    3
## [3,]    1    1   NA