Practice Question and Answer

Q:

A,B, C are three points such that AB = 9 cm, BC = 11 cm and AC = 20 cm. The number of circles passing through points A,B,C is: 

1799 0

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

Q: Rajeev's age is four more than the age of Shilpa. The age of Shilpa can be obtained by subtracting four times her age 4 years ago from the four times her age after 4 years. What was Rajeev's age before 4 years ? 1799 0

  • 1
    36 years
    Correct
    Wrong
  • 2
    28 years
    Correct
    Wrong
  • 3
    32 years
    Correct
    Wrong
  • 4
    40 years
    Correct
    Wrong
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Answer : 3. "32 years"
Explanation :

Answer: C) 32 years Explanation: Let Shilpa's present age is p years According to question, p = 4(x+4) – 4(x–4) p = 4x+16 – 4x+16 p = 32 Shilpa's present age = 32 years Rajeev is four years older than Shilpa => Shilpa's present age = Rajeev's age 4 years before. => Rajeev's age 4 years before = 32 years.

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Answer : 1. "5"
Explanation :

Answer: A) 5 Explanation: The following arrangements satisfy all 3 conditions. Arrangement 1: 3 books in a row; 12 rows. Arrangement 2: 4 books in a row; 9 rows.Arrangement 3: 6 books in a row; 6 rows.Arrangement 4: 9 books in a row; 4 rows.Arrangement 5: 12 books in a row; 3 rows.   Therefore, the possible arrangements are 5.

Q:

Which state has launched the 'COSFOM' website for Community Forest Management?

1799 0

  • 1
    Manipur
    Correct
    Wrong
  • 2
    Bihar
    Correct
    Wrong
  • 3
    Assam
    Correct
    Wrong
  • 4
    West Bengal
    Correct
    Wrong
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Answer : 1. "Manipur"

Q:

The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight (in kg) of B is 

1799 0

  • 1
    31
    Correct
    Wrong
  • 2
    17
    Correct
    Wrong
  • 3
    20
    Correct
    Wrong
  • 4
    26
    Correct
    Wrong
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Answer : 1. "31 "

Q:

In triangle PQR, points A, B and C are taken on PQ, PR and QR respectively such that QC = AC and CR = CB. If ∠QPR = 40°, then ∠ACB is equal to: 

1799 0

  • 1
    $$140^°$$
    Correct
    Wrong
  • 2
    $$40^°$$
    Correct
    Wrong
  • 3
    $$70^°$$
    Correct
    Wrong
  • 4
    $$100^°$$
    Correct
    Wrong
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Answer : 4. "$$100^°$$ "

Q:

A kite is flying in the sky. The length of string between a point on the ground and kite is 420 m. The angle of elevation of string with the ground is 30o. Assuming that there is no slack in the string, then what is the height (in metres) of the kite?

1799 0

  • 1
    $$ {210\sqrt{3}}$$
    Correct
    Wrong
  • 2
    240
    Correct
    Wrong
  • 3
    $$ {240\sqrt{3}}$$
    Correct
    Wrong
  • 4
    210
    Correct
    Wrong
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Answer : 4. "210"

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