2. My mother says, in her childhood petrol was 1 rupee per litre. It is 52 rupees per litre today. By what percentage has the price has gone up?

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

Is ofat (-25, 0), (25, 0) co- (0, -15), (0, 15)?