Maths Practice Question and Answer

Q:

If sin2a = cos3a then the value of cot6 a – cot2a? 

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  • 1
    1
    Correct
    Wrong
  • 2
    2
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    -1
    Correct
    Wrong
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Answer : 1. "1 "

Q:

The average age of a man and his son is 55 years. The ratio of their ages is 7 : 4, respectively. What will be the ratio of their ages after 6 years?

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  • 1
    1 : 2
    Correct
    Wrong
  • 2
    12 : 7
    Correct
    Wrong
  • 3
    25 : 17
    Correct
    Wrong
  • 4
    38 : 23
    Correct
    Wrong
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Answer : 4. "38 : 23"

Q:

The area of a triangle is 96 cmand the ratio of its sides is 6 : 8 : 10. What is the perimeter of the triangle?

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  • 1
    48 cm
    Correct
    Wrong
  • 2
    56 cm
    Correct
    Wrong
  • 3
    64 cm
    Correct
    Wrong
  • 4
    44 cm
    Correct
    Wrong
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Answer : 1. "48 cm"

Q:

The HCF of three numbers 98, 175 and 210 will be:

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  • 1
    6
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    3
    Correct
    Wrong
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Answer : 3. "7"

Q:

The angle of elevation of the top of a tower from the top of a building whose height is 680 m is 45° and the angle of elevation of the top of same tower from the foot of the same building is 60°. What is the height (in m) of the tower?

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  • 1
    340(3 + √3)
    Correct
    Wrong
  • 2
    310(3 - √3)
    Correct
    Wrong
  • 3
    310(3 + √3)
    Correct
    Wrong
  • 4
    340(3 - √3)
    Correct
    Wrong
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Answer : 1. "340(3 + √3)"

Q:

Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations and give answer.
(A) x>y
(B) x≥y
(C) x˂y
(D) x≤y
(E) x=y or the relations ship cannot be established

I. $$ {4x^2-4x-3=0}$$
II. $$ {4y^2+12y+5=0}$$

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  • 1
    A
    Correct
    Wrong
  • 2
    B
    Correct
    Wrong
  • 3
    C
    Correct
    Wrong
  • 4
    D
    Correct
    Wrong
  • 5
    E
    Correct
    Wrong
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Answer : 5. "E"

Q:

Two people A and B started their journey from P to Q and Q to P respectively. After crossing each other, A and B completed the remaining part of their journey in 3 hour 20 mins and 4 hours 48 mins respectively. If the speed of B is 80 km/hr, then find the speed of A in (km/ hr)? 

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  • 1
    86km/hr
    Correct
    Wrong
  • 2
    96km/hr
    Correct
    Wrong
  • 3
    48km/hr
    Correct
    Wrong
  • 4
    56km/hr
    Correct
    Wrong
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Answer : 2. "96km/hr "

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