# Tag Archives: RD Sharma Class-10

Question 13. A part of monthly hostel charges in a college are fixed and the remaining depend on the number of days one has taken… Read More
Question 1. If in a rectangle, the length is increased and breadth reduced each by 2 units, the area is reduced by 28 square units.… Read More
Question 1. A bucket has top and bottom diameters of 40 cm and 20 cm respectively. Find the volume of the bucket if its depth… Read More
Question 11. A bucket is in the form of a frustum of a cone of height 30 cm with radii of its lower and upper ends… Read More
Question 1. Akhila went to a fair in her village. She wanted to enjoy rides on the Giant Wheel and play Hoopla (a game in… Read More
Solve the following quadratic equations by factorization Question 1. (x – 4) (x + 2) = 0 Solution: We have equation,  (x – 4) (x… Read More
Question 11. Find the mean, median, and mode of the following data: Classes 0-50 50-100 100-150 150-200 200-250 250-300 300-350 Frequency 2 3 5 6… Read More
Question 1. Find the mode of the following data:   (i) 3, 5, 7, 4, 5, 3, 5, 6, 8, 9, 5, 3, 5, 3,… Read More
Question 11. An incomplete distribution is given below : Variable 10-20 20-30 30-40 40-50 50-60 60-70 70-80 Frequency 12 30 – 65 – 25 18 You… Read More
Question 1. Following are the lives in hours of 15 pieces of the components of aircraft engine. Find the median: 715, 724, 725, 710, 729,… Read More
Question 27. If A = B = 60°, verify that (i) cos(A − B) = cos A cos B + sin A sin B Solution: … Read More
Question 14. Find the mean of the following frequency distribution: Class interval: 25 – 29 30 – 34 35 – 39 40 – 44 45… Read More
Question 1. The following table gives the distribution of total household expenditure (in rupees) of manual workers in a city. Expenditure (in rupees) (x) Frequency… Read More
Question 8. Prove the following: (i) sin θ sin (90° – θ) – cosθ cos (90° – θ) = 0 Solution: We have to prove… Read More
Question 1. Evaluate the following: (i) sin 20°/cos 70° Solution: Given: sin 20°/cos 70° = sin(90° − 70°)/cos 70° = cos 70°/cos 70°      … Read More