# Tag Archives: RD Sharma Class-10

Question 1. Find: (i) 10th tent of the AP 1, 4, 7, 10…. (ii) 18th term of the AP √2, 3√2, 5√2, ……. (iii) nth… Read More
Problem 11: Five coins were simultaneously tossed 1000 times and at each toss, the number of heads was observed. The number of tosses during which… Read More
Problem 1: Calculate the mean for the following distribution: x: 5 6 7 8 9 f: 4  8 14 11 3 Solution: x  f fx… Read More
Question 11. In the figure, PQ is tangent at a point R of the circle with centre O. If ∠TRQ = 30°, find m ∠PRS… Read More
Question 1. Fill in the blanks : (i) The common point of a tangent and the circle is called ………. Solution: Point of contact. (ii)… Read More
Question 1. If PT is a tangent at T to a circle whose centre is O and OP = 17 cm, OT = 8 cm.… Read More
Question 1. The hypotenuse of a right triangle is 25 cm. The difference between the lengths of the other two sides of the triangle is… Read More
Q1. Verify that the numbers given alongside of the cubic polynomials below are their zeroes. Also, verify the relationship between the zeros and coefficients in… Read More
Question 1. Show that the following numbers are irrational. (i) 1/√2 Solution: Let assume that 1/√2 is a rational number Let us assume 1/√2 = r… Read More
Question 1. Without actually performing the long division, state whether the following rational numbers will have a terminating decimal expansion or a non-terminating repeating decimal… Read More
Question 11. The cost of 4 pens and 4 pencil boxes is ₹ 100. Three times the cost of a pen is ₹ 15 more… Read More
Question 1. 5 pens and 6 pencils together cost ₹ 9 and 3 pens and 2 pencils cost ₹ 5. Find the cost of 1… Read More
Question 1. Express each of the following integers as a product of its prime. i) 420 ii) 468 iii) 945 iv) 7325 Solution: Let us… Read More
Question 11. Find the greatest number which divides 285 and 1249 leaving remainders 9 and 7 respectively. Solution: The required number when divides 285 and 1249,… Read More
Question 1. Define HCF of two positive integers and find the HCF of the following pairs of numbers: (i) 32 and 54 Solution: Applying Euclid’s… Read More