Removing selective NA's valued rows in R [duplicate]

Answer 1

Try

df <- df[rowSums(!is.na(df[, -c(1:2)])) != 0, ] # Remove rows which have NA's from column 3 on-wards
names(df) <- paste0("V", seq_along(df)) # Renaming the column names
df
##   V1 V2  V3   V4   V5 V6 V7
## 1  1  2 abc   NA NA
## 2  2  3 abd   be    f NA NA