Study the given Venn diagram carefully and answer the question that follows.
The numbers in different sections indicate the number of persons. How many surgeons are there who are also dieticians but not barbers?
The volume (in m3) of a cube, each of whose edges is 25 m, is:
Which of the options below is equivalent to 216x3 + 343y3 + 756x2y + 882xy2.