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RS Aggarwal - Mathematics

3. Squares and Square Roots

1. Rational Numbers
2. Exponents
3. Squares and Square Roots
4. Cubes and Cube Roots
5. Playing with Numbers
6. Operations on Algebraic Expressions
7. Factorisation
Linear Equations
9. Percentage
10. Profit and Loss
11. Compound Interest
12. Direct and Inverse Proportions
13. Time and Work
14. Polygons
15. Quadrilaterals
16. Parallelograms
17. Construction of Quadrilaterals
18. Area of a Trapezium and a Polygon
19. Three-Dimensional Figures
20. Volume and Surface Area of Solids
21. Data Handling
22. Constructing and Interpreting Bar Graphs
23. Pie Charts
24. Probability
25. Graphs

Exercise 3A

Exercise 3B

1 2 3 4 5 A 5 B 6 7 8 9 10 11 12 13

Exercise 3C

1 2 3 4 5 6 7 8

Exercise 3D

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Exercise 3E

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Exercise 3F

1 2 3 4 5 6 7 8 9 10 11 12

Exercise 3G

1 2 3 4 5 6 7 8 9 10

Exercise 3H

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

CCE Test Paper-3

1 2 3 4 5 6 7 8 9 10 11 12 13

Q. 94.4( 7 Votes )

Which of the foll A. (2, 3, 5)

B. (5, 7, 9)

C. (6, 9, 11)

D. (8, 15, 17)

Class 8th RS Aggarwal - Mathematics 3. Squares and Square Roots

Answer :

We know that,

According to the Pythagorean triplet,

For a natural number m,

(2m, m² – 1, m² + 1) is a Pythagorean triplet.

Hence,

Considering the Pythagorean triplet,

Let m = 4

2m = 8

m² – 1 = 15

m²+ 1 = 17

Thus,

(8, 15, 17) is the Pythagorean triplet.

Hence,

Option (D) is the correct option.

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