R count number of na
Similar codes
- 1 vote218 views1 answer
- 3 votes283 views3 answers
- 2 votes222 views4 answers
- 0 vote239 views1 answer
- 0 vote266 views1 answer
- 1 vote220 views1 answer
- 1 vote227 views1 answer
- 0 vote235 views1 answer
- 1 vote234 views3 answers
- 0 vote232 views1 answer