Question: For each block of the following code, either explain why they should be erroneous, or explain what tasks the non - erroneous ones perform. vector

For each block of the following code, either explain why they should be erroneous, or explain what tasks the non-erroneous ones perform.
vector2<- c(11,"1",8)
vector2[1]+ vector2[3]
dataframe3<- data.frame(z1="6",z2=11,z3=8)
dataframe3[1,2]+ dataframe3[1,3]
list4<- list(z1="6", z2=11, z3="8", z4=23)
list4[[2]]+list4[[4]]
list4[2]+list4[4]

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