with(mtcars, mpg[cyl == 8 & disp > 350]) ## [1] 18.7 14.3 10.4 10.4 14.7 19.2 15.8 mtcars$mpg[mtcars$cyl == 8 & mtcars$disp > 350] ## [1] 18.7 14.3 10.4 10.4 14.7 19.2 15.8
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