Practice Question and Answer

Q:

If the price of petrol increases by 19% and Sunitha intends to spend only an additional 12 % on petrol, by what percent should she reduce the quantity of petrol purchased?

2557 2

  • 1
    7
    Correct
    Wrong
  • 2
    8
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 3. "6"

Q:

If $$ x=(164)^{169}+ (333)^{337}-(727)^{726}$$ then what is the units digit of x?

3142 1

  • 1
    5
    Correct
    Wrong
  • 2
    9
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 4. "8"

Q:

To do a certain work, the ratio of the efficiencies of X and Y is 5:4. Working together, they can complete the same work in 10 days. Y alone starts the work and leaves after 5 days. The remaining work will be completed by X alone in:

1999 1

  • 1
    14 days
    Correct
    Wrong
  • 2
    12 days
    Correct
    Wrong
  • 3
    10 days
    Correct
    Wrong
  • 4
    15 days
    Correct
    Wrong
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Answer : 1. "14 days "

Q:

A man starts from his house and travelling at 30 km/h, he reaches his office late by 10 minute, and travelling at 24 km/h, he reaches his office late by 18 minutes. The distance (in km) from his house to his office is:

1802 1

  • 1
    12
    Correct
    Wrong
  • 2
    20
    Correct
    Wrong
  • 3
    16
    Correct
    Wrong
  • 4
    18
    Correct
    Wrong
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Answer : 3. "16"

Q:

If $$ {1+sinθ\over {1-sinθ}}={p^{2}\over{q^{2}}}$$, then sec θ is equal to:

1712 0

  • 1
    $$ {2p^{2}{q^{2}}\over {p^{2}+{q^{2}}}}$$
    Correct
    Wrong
  • 2
    $${1\over 2}\left({q\over p}+{p\over q} \right)$$
    Correct
    Wrong
  • 3
    $$ {1\over {p^{2}}}+{1\over {q^{2}}}$$
    Correct
    Wrong
  • 4
    $$ {p^{2}q^{2}}\over{p^{2}+q^{2}}$$
    Correct
    Wrong
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Answer : 2. "$${1\over 2}\left({q\over p}+{p\over q} \right)$$"

Q:

The sides of a triangle are 56 cm, 90 cm and 106 cm. The circumference of its circumcircle is:

2259 0

  • 1
    108 π
    Correct
    Wrong
  • 2
    112 π
    Correct
    Wrong
  • 3
    106 π
    Correct
    Wrong
  • 4
    109 π
    Correct
    Wrong
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Answer : 3. "106 π"

Q:

The bisector of ∠B in ΔABC meets AC at D. If AB=10 cm and BC=11 cm and AC=14 cm, then the length of AD is:

1530 0

  • 1
    $$ {20\over3}$$
    Correct
    Wrong
  • 2
    22
    Correct
    Wrong
  • 3
    $$ {22\over3}$$
    Correct
    Wrong
  • 4
    20
    Correct
    Wrong
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Answer : 1. "$$ {20\over3}$$"

Q:

The base of a right prism is a tringle with sides 20 cm, 21 cm and 29 cm. If its volume is 7560 cm3, then its lateral surface area ( in cm2) is:

1585 0

  • 1
    2556
    Correct
    Wrong
  • 2
    2448
    Correct
    Wrong
  • 3
    2520
    Correct
    Wrong
  • 4
    2484
    Correct
    Wrong
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Answer : 3. "2520"

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