If (x + 6y) = 8, and xy = 2, where x > O, what is the value of (x³+216y³)?

If 42573* is exactly divisible by 72, then what will come in place of *?

$${2}=x+{1\over{1+{1\over5+{1\over{2}}}}}$$ then the value of x is equal to:

A merchant purchases a wrist watch for ₹ 450 and fixes its list price in such a way that after allowing a discount of 10%, he earns a profit of 20%. Then the list price of the watch is

The diameter of the circle with center O is AB. PQ is the chord that does not intersect AB. Join AP and BQ. If ∠BAP = ∠ABQ,  then what will be ABQP?

The total number of digits used in numbering the pages of a book of 366 pages is

An item when sold for ₹ 1,690 earned 30% profit on the cost price. Then the cost price is 

A sold a watch to B at a profit of 20%. B sold it to C at 30% profit. C sold it to D at 10% loss. If B's profit is ₹80 more than that of A, then D bought it for: