RS Aggarwal Class 8 solutions Chapter 5 Playing with Numbers Ex 5D in pdf free download Question 1. If 5×6 is exactly divisible by 3, then the least value of x is (a)0 (b) 1 (c)2 (d) 3 Solution: 5×6 is exactly divisible by 3 Sum of its digits must be divisible by 3 5 + x + 6 = 11 + x is divisible by 3 Least value of x = 1 as 12 is divisible by 3 (b) Question … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 5 Playing with Numbers Ex 5D

# Class 8

## RS Aggarwal Solutions Class 8 of Chapter 5 Playing with Numbers Ex 5C

RS Aggarwal Class 8 solutions Chapter 5 Playing with Numbers Ex 5C in pdf free download Replace A, B, C by suitable numerals. Question 1. Solution: Here A can be as 6 + 7 = 13 Now 1 + 5 + 8 = 14 ∴C = 1, B = 4, A = 6 Question 2. Solution: Here A can be 7, as 6+7 = 13 1 + B + 9 = 10 + B ∴B can be 7 ∴10 + 7 = 17 1 + C + 6 = 7 + C ∴C can be 4 ∴1 + 4 + 6 = … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 5 Playing with Numbers Ex 5C

## RS Aggarwal Solutions Class 8 of Chapter 5 Playing with Numbers Ex 5B

RS Aggarwal Class 8 solutions Chapter 5 Playing with Numbers Ex 5B in pdf free download Question 1. Test the divisibility of each of the following numbers by 2: (i) 94 (ii) 570 (iii) 285 (iv) 2398 (v) 79532 (vi) 13576 (vii) 46821 (viii) 84663 (ix) 66669 Solution: We know that a number is divisible by 2 if its unit digit is 0, 2, 4, 6 or 8 Therefore, (i) 94, (ii) … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 5 Playing with Numbers Ex 5B

## RS Aggarwal Solutions Class 8 of Chapter 5 Playing with Numbers Ex 5A

RS Aggarwal Class 8 solutions Chapter 5 Playing with Numbers Ex 5A in pdf free download Question 1. The units digit of a two-digit number is 3 and seven times the sum of the digits is the number itself. Find the number. Solution: Let tens digit = x Units digit = 3 ∴Number = 3 + 10x According to the condition, 7 (x + 3) = 3 + 10x 7x + 21 = 3 + 10x 21 – 3 = 10x – … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 5 Playing with Numbers Ex 5A

## RS Aggarwal Solutions Class 8 of Chapter 4 Cubes and Cube Roots Ex 4D

RS Aggarwal Class 8 solutions Chapter 4 Cubes and Cube Roots Ex 4D in pdf free download Objective Questions Tick the correct answer in each of the following: Question 1. Which of the following numbers is a perfect cube? (a) 141 (b) 294 (c) 216 (d) 496 Solution: (a) 141 = 3 x 47 Question 2. Which of the following numbers is a perfect cube? (a) 1152 (b) … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 4 Cubes and Cube Roots Ex 4D

## RS Aggarwal Solutions Class 8 of Chapter 4 Cubes and Cube Roots Ex 4C

RS Aggarwal Class 8 solutions Chapter 4 Cubes and Cube Roots Ex 4C in pdf free download Evaluate: Question 1. Solution: = = = 4 Question 2. Solution: = = = 7 Question 3. Solution: Question 4. Solution: Question 5. Solution: Question 6. Solution: Question 7. Solution: Question … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 4 Cubes and Cube Roots Ex 4C

## RS Aggarwal Solutions Class 8 of Chapter 4 Cubes and Cube Roots Ex 4B

RS Aggarwal Class 8 solutions Chapter 4 Cubes and Cube Roots Ex 4B in pdf free download Find the value of each of the following using the short-cut method : Question 1. (25)³ Solution: (25)³ = We know that short-cut method for finding the cube of any two digit number is as given. Question 2. (47)³ Solution: (47)³ = Here a = 4, b = 7 Question … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 4 Cubes and Cube Roots Ex 4B

## RS Aggarwal Solutions Class 8 of Chapter 4 Cubes and Cube Roots Ex 4A

RS Aggarwal Class 8 solutions Chapter 4 Cubes and Cube Roots Ex 4A in pdf free download Question 1. Evaluate : (i) (8)³ (ii) (15)³ (iii) (21)³ (iv) (60)³ Solution: (i) (8)³ = 8 x 8 x 8 = 512 (ii) (15)³ = 15 x 15 x 15 = 3375 (iii) (21)³ = 21 x 21 x 21 = 9261 (iv) (60)³ = 60 x 60 x 60 = 216000 Ans. Question 2. Evatuate : (i) (1.2)³ (ii) (3.5)³ (iii) (o.8)³ (iv) … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 4 Cubes and Cube Roots Ex 4A

## RS Aggarwal Solutions Class 8 of Chapter 3 Squares and Square Roots Ex 3H

RS Aggarwal Class 8 solutions Chapter 3 Squares and Square Roots Ex 3H in pdf free download Question 1. Which of the following numbers is not a perfect square ? (a) 7056 (b) 3969 (c) 5478 (d) 4624 Solution: 5478 as it has 8 at in the end (c) Question 2. Which of the following numbers is not a perfect square ? (a) 1444 (b) 3136 (c) 961 (d) 2222 Solution: 2222 … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 3 Squares and Square Roots Ex 3H

## RS Aggarwal Solutions Class 8 of Chapter 3 Squares and Square Roots Ex 3G

RS Aggarwal Class 8 solutions Chapter 3 Squares and Square Roots Ex 3G in pdf free download Evaluate: Question 1. Solution: = = = Question 2. Solution: = = = Question 3. Solution: = = = Question 4. Solution: Question 5. Solution: = = = = = Question 6. Solution: = = = Question … [Read more...] about RS Aggarwal Solutions Class 8 of Chapter 3 Squares and Square Roots Ex 3G