Question

show that the ser of letters needed to spell CATARACT and the set of letters needed to spell TRACT are equal

Answer 1

set of leter in CATARACT :- (C,A,T,R)

set of letter in TRACT:-(T,R,A,C)

they are equal

Answer 2

Hey !!

Let X be the set of letters in ''CATARACT'' . Then X = { C , A , T , R }

let Y be the set of letters in ''TRACT''. Then

          Y = { T , R , A , C , T } = { T , R , A , C }

Since every element in X is in Y and every element in Y is in X. It follows that X = Y.

GOOD LUCK !!