Take a look at this:
table(sample(0:1, 9, replace = TRUE), sample(0:1, 10, replace = TRUE))
Error in table(sample(0:1, 9, replace = TRUE), sample(0:1, 10, replace = TRUE)) :
all arguments must have the same length
versus
table(sample(0:1, 10, replace = TRUE), sample(0:1, 10, replace = TRUE))
0 1
0 2 4
1 3 1