" 22."a^(3)-(1)/(a^(3))-2a+(2)/(a)

(22)/(2sqrt(3)+1)+(17)/(2sqrt(3)-1)(2)(sqrt(2))/(sqrt(6)-sqrt(2))-(sqrt(3))/(sqrt(6)+sqrt(2))

In A B C , if the orthocentre is (1,2) and the circumcenter is (0, 0), then centroid of A B C) is (a) (1/2,2/3) (b) (1/3,2/3) (c) (2/3,1) (d) none of these

In A B C , if the orthocentre is (1,2) and the circumcenter is (0, 0), then centroid of A B C) is (1/2,2/3) (b) (1/3,2/3) (2/3,1) (d) none of these

In A B C , if the orthocentre is (0,0) and the circumcenter is (1,2), then centroid of A B C) is (a) (1/2,2/3) (b) (1/3,2/3) (c) (2/3,1) (d) none of these

In A B C , if the orthocentre is (1,2) and the circumcenter is (0, 0), then centroid of A B C) is (a) (1/2,2/3) (b) (1/3,2/3) (c) (2/3,1) (d) none of these

Suppose X={1, 2, 3, 4} and R is a relation on X. If R={(1,1),(2,2),(3,3),(1,2),(2,1),(2,3),(3,2)}, then which one of the following is correct?

Let A={1,2,3} and Let R={(1,1),(2,2),(3,3),(1,2),(2,1),(2,3),(3,2)}. then ,R is