If f : A → B is a bijective function, then f-1 of is:

1.  fof-1

2.  f

3.  f-1

4.  IA (Identity mapping of the set A)

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4
Correct Answer :

I<sub>A</sub> (Identity mapping of the set A)


Explanation :
No Explanation available for this question

If f : R→R is defined by f(x)=2x+|x|, then f(3x)-f(-x)-4x is:

1.  f(x)

2.  -f(x)

3.  f(-x)

4.  2f(x)

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4
Correct Answer :

2f(x)


Explanation :
No Explanation available for this question

If x=2/(3+√7), then (x-3)2 is equal to:

1.  1

2.  3

3.  7

4.  6

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4
Correct Answer :

7


Explanation :
No Explanation available for this question

If(1.5)n=(0.15)b=100, then 1/a-1/b is equal to:

1.  0

2.  1

3.  1/2

4.  2/3

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4
Correct Answer :

1/2


Explanation :
No Explanation available for this question

There are two towers, on a horizontal line from the midpoint of the line joining their feet. The tops of the higher and lowers appear at an angle of elevations on 60" and 300 respectively. The first tower has a height of 100 met

1.  100/√3 m

2.  100/√5 m

3.  100√2 m

4.  100/3 m

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4
Correct Answer :

100/3 m


Explanation :
No Explanation available for this question

The horizontal distance between two towers is 60m and the angular depression of the top of the first as seen from the second, which is 150 meter high is 300. The height of the first tower is:

1.  (150+20√3)m

2.  (150+15√3)m

3.  (150-20√5)m

4.  (150-20√3)m

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4
Correct Answer :

(150-20&#8730;3)m


Explanation :
No Explanation available for this question

The probability that a number selected at random from the set of numbers {1, 2, 3, .....100} is a cube, is:

1.  1/25

2.  2/25

3.  3/25

4.  4/25

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4
Correct Answer :

1/25


Explanation :
No Explanation available for this question

When two dice are thrown. The probability of getting 10 or 11 is:

1.  7/36

2.  5/36

3.  5/18

4.  7/18

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4
Correct Answer :

5/36


Explanation :
No Explanation available for this question

The probability of getting exactly 4 heads in 6 tosses of a coin, is:

1.  15/60

2.  15/64

3.  13/64

4.  10/64

View Answer  
4
Correct Answer :

15/64


Explanation :
No Explanation available for this question

0.0001 < n < 0.001, then:

1.  -4 < log n < -3

2.  -3 < log n < -2

3.  -2 < log n < -1

4.  -5 < log n < -4

View Answer  
4
Correct Answer :

-4 &lt; log n &lt; -3


Explanation :
No Explanation available for this question
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