Five friends A, B, C, D, E sit in a row facing north. A is to the left of B, C is between A and B, D is not at an end, E is to the right of B. Who is in the middle?
The table below shows the sales (in Rs. lakh) of four products A, B, C, and D across four quarters of 2015. What is the total sales of product A across all quarters?
If $a, b, c$ are in geometric progression and $a + b + c = 21$, $abc = 216$, what is the value of $b$?
The cost price of an article is Rs. 200. It is sold at a 10% discount on the marked price, yielding a 25% profit. What is the marked price?
If $x^2 + y^2 = 25$ and $xy = 12$, what is the value of $x + y$?