Maths Practice Question and Answer

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Answer : 3. "12 : 11"

Q:

10 persons can do a job in X days. If 20 persons with twice the efficiency can do the same job in 5 days, then find the value of X?

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  • 1
    40
    Correct
    Wrong
  • 2
    15
    Correct
    Wrong
  • 3
    20
    Correct
    Wrong
  • 4
    30
    Correct
    Wrong
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Answer : 3. "20"

Q:

64329 is divided by a certain number. While dividing, the numbers, 175, 114 and 213 appear as three successive remainders. The divisor is?

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  • 1
    184
    Correct
    Wrong
  • 2
    224
    Correct
    Wrong
  • 3
    234
    Correct
    Wrong
  • 4
    296
    Correct
    Wrong
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Answer : 3. "234 "
Explanation :

Number at (i) = 643 – 175 = 468

Number at (ii) = 1752 – 114 = 1638

Number at (iii) = 1149 – 213 = 936

Clearly, 468, 1638 and 936 are multiples of 234 and 234 > 213.

Divisor = 234

Q:

A sum of money at compound interest doubles itself in 15 years. It will become eight times of itself in

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  • 1
    45 years
    Correct
    Wrong
  • 2
    48 years
    Correct
    Wrong
  • 3
    54 years
    Correct
    Wrong
  • 4
    60 years
    Correct
    Wrong
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Answer : 1. "45 years "

Q:

Solve it $$ {sin \ θ\over 1+cos\ θ}+{1+cosθ\over sin\ θ}=?$$

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  • 1
    $$ {tan \ θ} $$
    Correct
    Wrong
  • 2
    $$ {cot\ θ}$$
    Correct
    Wrong
  • 3
    $$ {2\over sinθ}$$
    Correct
    Wrong
  • 4
    $$ {2\over cosθ}$$
    Correct
    Wrong
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Answer : 3. "$$ {2\over sinθ}$$"

Q:

The ratio of the present ages of A and B is 16:7. After 12 years, A’s age is twice B’s age then find the present ages of A and B.

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  • 1
    64yr; 28yr
    Correct
    Wrong
  • 2
    80yr; 35yr
    Correct
    Wrong
  • 3
    None of these
    Correct
    Wrong
  • 4
    96yr; 42 yr
    Correct
    Wrong
  • 5
    102yr; 49yr
    Correct
    Wrong
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Answer : 4. "96yr; 42 yr"

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. $$ {2x^2+7x+6=0}$$
II.  $${2y^2+7y+5=0}$$

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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:

If the ratio of the heights of two identical triangles is 4: 9, find the ratio of the areas of the two triangles.

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  • 1
    16 : 81
    Correct
    Wrong
  • 2
    4 : 9
    Correct
    Wrong
  • 3
    9 :4
    Correct
    Wrong
  • 4
    81 : 16
    Correct
    Wrong
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Answer : 1. "16 : 81"

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