Category Archives: Class 11

One of the most powerful tools in any engineer or scientist’s toolkit is 3D geometry. 3D geometry comes to picture into model real-world quantities such… Read More
Generally, Conditional statements are the if-then statement in which p is called a hypothesis(or antecedent or premise) and q is called a conclusion( or consequence).… Read More
A permutation is a collection or a combination of objects from a set where the order or the arrangement of the chosen objects does matter.… Read More
Question 1. A die is rolled. Let E be the event “die shows 4” and F be the event “die shows even number”. Are E… Read More
Question 1(a). If A and B are mutually exclusive events associated with a random experiment such that P(A) = 0.4 and P(B) = 0.5, then… Read More
Question 1: Prove that the following sets of three lines are concurrent: (i) 15x – 18y + 1 = 0, 12x + 10y – 3… Read More
Question 1. Determine the distance between the following pair of parallel lines: (i) 4x – 3y – 9 = 0 and 4x – 3y –… Read More
Question 1. Prove that the area of the parallelogram formed by the lines a1x + b1y + c1 = 0, a1x + b1y + d1… Read More
Question 1. Find the equation of the line parallel to the x-axis and passing through (3, -5). Solution:  Let the equation of line be:  y… Read More
Question 11. A man starts repaying a loan as first installment of Rs. 100. If he increases the installment by Rs. 5 every month, what… Read More
Question 1. A man saved Rs. 16500 in 10 years. In each year after the first he saved Rs. 100 more than he did in… Read More
Question 1: A coin is tossed. Find the total number of elementary events and also the total number of events associated with the random experiment.… Read More