Question: Let A be a matrix with 5 rows and 2 columns. Which of the following operations are illegitimate? 1. t(A) %*% t(A) 2. A %*%

Let A be a matrix with 5 rows and 2 columns. Which of the following operations are illegitimate?

1.

t(A) %*% t(A)
2.

A %*% A
3.

A %*% t(A)
4.

nrow(A)*A
5.

t(A) %*% A
6.

A * A

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