pH of clear rain water varies from :
Three friends Aravind, Rahul and Nikhil rated 5 movies as tabulated below. Which two of them has the most similar tastes in movies? MoviesAravindRahulNikhilM15.56.57M26.58.58M38.556.5M4477.5M57610
2/3 x [-6/7+4/5]=[ 2/3 x 4/5] x (-6/7)