Aptitude Practice Question and Answer

Q:

The HCF of x8 – 1 and x4 + 2x3 – 2x – 1 is :

365 0

  • 1

    x2 + 1 

    Correct
    Wrong
  • 2

    x2 – 1 

    Correct
    Wrong
  • 3

    x + 1

    Correct
    Wrong
  • 4

    x – 1

    Correct
    Wrong
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Answer : 4. "

x – 1

"

Q:

if 3sin2θ – cosθ-1=0, 00< θ<900, then what is the value of cot θ + cosec θ?

365 0

  • 1
    $${3\sqrt { 2} }\over 2$$
    Correct
    Wrong
  • 2
    $${2\sqrt { 3} }$$
    Correct
    Wrong
  • 3
    $${\sqrt { 5} }$$
    Correct
    Wrong
  • 4
    $${2\sqrt { 5} }$$
    Correct
    Wrong
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Answer : 3. "$${\sqrt { 5} }$$"

Q:

Answer the following questions

If 35% of a number is subtracted from the second number the second number reduces to its four–fifths. What is the ratio the first number to the second number?

364 0

  • 1
    4 : 7
    Correct
    Wrong
  • 2
    4 : 9
    Correct
    Wrong
  • 3
    5 : 9
    Correct
    Wrong
  • 4
    5 : 7
    Correct
    Wrong
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Answer : 1. "4 : 7 "

Q:

Out of the given responses, one of the factors of (a2 – b2 )3 + (b2 – c2) 3 + (c2 – a2) 3 is

363 0

  • 1
    (a + b) (a – b)
    Correct
    Wrong
  • 2
    (a + b) (a + b)
    Correct
    Wrong
  • 3
    (a – b) (a – b)
    Correct
    Wrong
  • 4
    (b – c) (b – c)
    Correct
    Wrong
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Answer : 1. "(a + b) (a – b) "

Q:

4% of the selling price of an article is equal to 5% of its cost price. Again 20% of the selling price is Rs. 120 more than 22% of its cost price. The ratio of cost price & selling price is 

362 0

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

Q:

The radius of a wire is decreased to one third. If volume remains the same, length will increase by :

362 0

  • 1
    6 times
    Correct
    Wrong
  • 2
    1 time
    Correct
    Wrong
  • 3
    3 times
    Correct
    Wrong
  • 4
    9 times
    Correct
    Wrong
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Answer : 4. "9 times"

Q:

What is the area (in sq. units) of the triangle formed by the graphs of the equations 2x+5y-12=0, x+y=3 and y = 0?

362 0

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

Q:

A prism with a right triangular base is 25 cm high. If the shorter sides of the triangle are in the ratio of 1 : 2 and the volume of the prism is 100 cm3 , what is the length of the longest side of the triangle?

361 0

  • 1
    √5 cm
    Correct
    Wrong
  • 2
    2√5 cm
    Correct
    Wrong
  • 3
    5√2 cm
    Correct
    Wrong
  • 4
    5 cm
    Correct
    Wrong
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Answer : 2. "2√5 cm "

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