1 2 A 2 B 3 A 3 B 4 A 4 B 4 C 4 D 5 A 5 B 5 C 5 D 5 E 5 F 5 G 5 H 6 A 6 B 7 8 9 10 A 10 B 11 12 A 12 B 12 C 12 D 12 E 13 A 13 B 13 C 13 D

West Bengal Mathematics

21. Logarithm

1. Real Numbers
2. Laws of Indices
3. Graph
4. Co-ordinate Geometry: Distance Formula
5. Linear Simultaneous Equations
6. Properties of Parallelogram
7. Polynomial
8. Factorisation
9. Transversal and Mid-Point Theorem
10. Profit and Loss
11. Statistics
12. Theorems on Area
13. Construction: (Construction of a Parallelogram whose measurement of one angle is given and equal in area of a triangle)
14. Construction: (Construction of a triangle equal in area of a quadrilateral)
15. Area and Perimeter of Triangle and Quadrilateral Shaped Region
16. Circumference of Circle
17. Theorems on concurrence
18. Area of Circular Region
19. Co-ordinate Geometry: Internal and External Division of Straight Line Segment
20. Co-ordinate Geometry: Area of Triangular Region
21. Logarithm

Let us do the sum 21

1 2 A 2 B 3 A 3 B 4 A 4 B 4 C 4 D 5 A 5 B 5 C 5 D 5 E 5 F 5 G 5 H 6 A 6 B 7 8 9 10 A 10 B 11 12 A 12 B 12 C 12 D 12 E 13 A 13 B 13 C 13 D

Q. 5 B4.1( 35 Votes )

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Class 9th West Bengal Mathematics 21. Logarithm

Answer :

LHS = log₁₀15(1+log₁₅30) + log₁₀16(1+ log₄7)– log₁₀6(log₆3+1+ log₆7)

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