If $x+\frac{5}{y}=4$, and then $\$y+\backslash frac\{5\}\{x\}=\; -4\$$  what is (x + y) equal to?

If 5th, 7th and 13th terms of an AP are in GP, then what is the ratio of its first term to its common difference?

If p, 1, q are in AP and p, 2, q are in GP, then which of the following statements is/are correct?

I. p, 4, q are in HP.

II. (1/p), (1/4), (1/q) are in AP.

Select the answer using the code given below.

 If $x=(1111){}^2$, $y=(1001){}^2$ and $z=(110){}^2$, then what is x³−y³−z³−3xyz equal to?