Answer :

(i) Given expression is 2n – 1

For n = 100,

2 × 100 – 1

= 200 – 1 = 199

(ii) Given expression is 3n + 2

For n = 5,

3 × 5 + 2

= 15 + 2 = 17

For n = 10,

3 × 10 + 2 = 30 + 2 = 32

For n = 100,

3 × 100 + 2 = 300 + 2 = 302

(iii) Given expression is 4n + 1

For n = 5, 4 × 5 + 1 = 20 + 1 = 21

For n = 100, 4 × 100 + 1 = 400 + 1 = 401

(iv) Given expression is 7n + 20

For n = 5, 7 × 5 + 20 = 35 + 20 = 55

For n = 10, 7 × 10 + 20 = 70 + 20 = 90

For n = 100, 7 × 100 + 20 = 700 + 20 = 720

(v) Given expression is \(n^2 + 1\)

For n = 5, \(5^2 + 1 \)= 25 + 1 = 26

For n = 10,\( 10^2 + 1 \)= 100 + 1 = 101

- NCERT solutions for class 7 maths chapter 1 Integers
- NCERT solutions for class 7 maths chapter 2 Fractions and Decimals
- NCERT solutions for class 7 maths chapter 3 Data Handling
- NCERT solutions for class 7 maths chapter 4 Simple Equations
- NCERT solutions for class 7 maths chapter 5 Lines and Angles
- NCERT solutions for class 7 maths chapter 6 The Triangle and its Properties
- NCERT solutions for class 7 maths chapter 7 Congruence of Triangles
- NCERT solutions for class 7 maths chapter 8 Comparing Quantities
- NCERT solutions for class 7 maths chapter 9 Rational Numbers
- NCERT solutions for class 7 maths chapter 10 Practical Geometry
- NCERT solutions for class 7 maths chapter 11 Perimeter and Area
- NCERT solutions for class 7 maths chapter 12 Algebraic Expressions
- NCERT solutions for class 7 maths chapter 13 Exponents and Powers
- NCERT solutions for class 7 maths chapter 14 Symmetry
- NCERT solutions for class 7 maths chapter 15 Visualising Solid Shapes

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- NCERT solutions for class 7 science chapter 2 Nutrition In Animals
- NCERT solutions for class 7 science chapter 3 Fibre to Fabric
- NCERT solutions for class 7 science chapter 4 Heat
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