If x – 1/x = 9, then x3 – 1/x3 is:
Since, x – 1/x = 15 Cubing both sides we get; x3 – 1/x3 – 3 × (x) × (1/x) × (x – 1/x) = 729 Or x3 – 1/ x3 = 1331 + 3 × 9 = 729 + 27 = 756 Alternate method: If it is given, x – 1/x = n and we have to find x3 – 1/x3, can directly use n3 + 3n. x – 1/x = 9 By using n3 + 3n, where n = 9 => 93 + 3 × 9 => 729 + 27 = 756
Six persons (L, M, N, O, P and Q) sit around a circular table facing towards the center but not necessarily in the same order. N sits immediate right of...
In which of the following statement the first person sits exactly between the second and the third person in the following arrangement?
I) DTJ
How many persons are sitting between Q and U when counted to the left of Q?
What is the position of the one who like Germany with respect to M?
Read the directions carefully and answer the following questions.
There are six persons C, E, D, F, A, and B sitting around the circular table ...
Which of the following colour does E like?
Which of the following groups of persons have the first person sitting between the other two?
Who among the following person sits immediate right of A?
Who sits opposite to R?
What is the position of K with respect to P?