Simplification 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
61). What is the value of \( \Large \frac{725 \times 725 \times 725+371 \times 371 \times 371}{725 \times 725-725 \times 371+371 \times 371}=? \)
A). 9610
B). 1960
C). 1096
D). 1016
62). If \( \Large a^{2}+b^{2}=234\ and\ ab=108 \), value of \( \Large \frac{a+b}{a-b} \)
A). 10
B). 8
C). 5
D). 4
63). If \( \Large 0.764 y = 1.236 x \), then what is the value of \( \Large \left(\frac{y-x}{y+x}\right)? \)
A). 0.764
B). 0.236
C). 2
D). 0.472
64). \( \Large \frac{ \left(m-n\right)^{3}+ \left(n-r\right)^{3}+ \left(r-m\right)^{3} }{6 \left(m-n\right) \left(n-r\right) \left(r-m\right) }=? \)
A). \( \Large \frac{1}{2} \)
B). \( \Large \frac{1}{3} \)
C). \( \Large \frac{1}{4} \)
D). \( \Large \frac{1}{6} \)
65). If \( \Large a+b+c=14\ and\ a^{2}+b^{2}+c^{2}=96 \), then \( \Large \left(ab+bc+ca\right)=? \)
A). 51
B). 55
C). 50
D). 65


66). \( \Large \left(1-\frac{1}{2}\right) \left(1-\frac{1}{3}\right) \left(1-\frac{1}{4}\right) \left(1-\frac{1}{5}\right)...... \left(1-\frac{1}{m}\right)=? \)
A). \( \Large \frac{1}{m} \)
B). m
C). m+1
D). \( \Large \frac{1}{ \left(m-1\right) } \)
67). If \( \Large a+\frac{1}{a}=\sqrt{3} \), then the value of \( \Large a^{6}-\frac{1}{a^{6}}+2 \) will be
A). \( \Large 3\sqrt{3} \)
B). 5
C). 1
D). 2
68). If \( \Large x+\frac{1}{x}=2,\ then\ x- \frac{1}{x} \)is ?
A). 0
B). 1
C). 2
D). -2
69). If \( \Large \left(x^{2}+\frac{1}{x^{2}}\right)=\frac{17}{4}\) , then what is \( \Large \left(x^{3}-\frac{1}{x^{3}}\right) \) equal to?
A). \( \Large \frac{75}{16} \)
B). \( \Large \frac{63}{8} \)
C). \( \Large \frac{95}{8} \)
D). None of the above.
70). A board 80 inches long is divided into 4 equal parts. What is the length of each part?
A). 20 inches
B). 25 inches
C). 15 inches
D). 18 inches
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