
Hi -
I am a beginner to the R language. I have written the following matrix: Z.mat=matrix(c(2,2,2,1,1,1,3,2,1,6,5,4,9,1,1,2,3,2), nrow=6)
I would like to add a 4th column consisting of: 6, 9, 8, 15, 16, 17

I would also like to name each column a, b, c, d as well.

Thanks!
 		 	   		  
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