Logarithms Questions and answers

  1. Elementary Mathematics
    1. Quadratic Equations
    2. Simplification
    3. Area and perimeter
    4. Volume and surface area
    5. Geometry
    6. Trigonometry
    7. Polynomials
    8. Height and Distance
    9. Simple and Decimal fraction
    10. Indices and Surd
    11. Logarithms
    12. Trigonometric ratio
    13. Straight lines
    14. Triangle
    15. Circles
    16. Quadrilateral and parallelogram
    17. Loci and concurrency
    18. Statistics
    19. Rectangular and Cartesian products
    20. Rational expression
    21. Set theory
    22. Factorisation
    23. LCM and HCF
    24. Clocks
    25. Real Analysis
31). Simplify: \( \Large log_{10} \left(\frac{55}{46}\right)-log_{10} \left(\frac{65}{69}\right)+log_{10} \left(\frac{26}{33}\right) \)
A). 0
B). 2
C). 4
D). 13
32). Find the value of \( \Large \frac{log_{10}400}{log_{10}4} \)
A). 4
B). 2
C). 100
D). 6
33). Find the value of \( \Large 3-2log_{5}3 \)
A). \( \Large log_{5} \left(13\frac{8}{9}\right) \)
B). \( \Large log_{5}9 \)
C). \( \Large log_{5} \left(\frac{9}{8}\right) \)
D). None of these
34). Find the value of \( \Large \frac{3log2+2log3}{2log6+log2} \)
A). 2
B). 6
C). 1
D). 4
35). Find the value of \( \Large \frac{log16-2log2+5log3-log27}{log4+log9} \)
A). 4
B). 1
C). 3
D). 9


36). If log3=.4771, log5=.6990, then find the value of log150
A). 2.1761
B). 2.1671
C). 2
D). 1.1761
37). \( \Large logx^{2}+logy^{2} \) is
A). \( \Large log \left(x^{2}+y^{2}\right) \)
B). \( \Large 2log \left(x+y\right) \)
C). \( \Large 2log \left(xy\right) \)
D). \( \Large log\frac{x^{2}}{y^{2}} \)
38). \( \Large \left(log_{b}a \times log_{c}b \times log_{a}c\right) \) is equal to
A). 0
B). 1
C). abc
D). a+b+c
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