If shortest side of a right angled triangle was 5 cm longer and the longest side was 5 cm shorter, the triangle would be equilateral.  What is the area of the original right angled triangle

1.  300 cm2

2.  250 cm2

3.  200 cm2

4.  150 cm2

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4
Correct Answer :

150 cm2


Explanation :
No Explanation available for this question

A semicircular piece of paper (with radius 7 cm) is folded along the diameter to form a cone such that he centre of the semicircle becomes the vertex of the cone.If the base of the cone is covered by a circular paper lid, what is the total surface area of the cone

1.  231 cm2

2.  115.5 cm2

3.  346.5 cm2

4.  None of these

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4
Correct Answer :

115.5 cm2


Explanation :
No Explanation available for this question

An experiment succeeds twice as often as it fails. What is the probability that in the next 5 trials there will be four successes

1.  0

2.  (2/3)4

3.  5×(2/3)4×(1/3)

4.  (2/3)4×(1/3)

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4
Correct Answer :

5×(2/3)4×(1/3)


Explanation :
No Explanation available for this question

Dinesh speaks truth in 3/4 cases and Abhishek lies in 1/5 cases. What is the percentage of cases in which both Dinesh and Abhishek contradict each other in stating a fact

1.  60%

2.  35%

3.  20%

4.  15%

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4
Correct Answer :

35\%


Explanation :
No Explanation available for this question

Sridhar Krishnan bought 100  shares each of  4 different  companies.   The purchase  prices  of  the shares are  Rs.20, Rs.19.50, Rs.27.50 and Rs.26.00 per share on a certain date.   In due course of time he sold off all the shares of all the 4 companies, but the transactions took place on different dates.   The sale transactions fetched him Rs.12.3, Rs.37.4, Rs.28.6 and Rs.21.7 per share, but it is not known which company's shares were sold when.  What is his net profit or loss

1.  Profit Rs.7

2.  Loss Rs.700

3.  Profit Rs.700

4.  Profit Rs.400

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4
Correct Answer :

Profit Rs.700


Explanation :
No Explanation available for this question

When 3 fair coins are tossed together, what is the probability of getting 2 tails

1.  1/4

2.  2/3

3.  1/3

4.  1/2

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4
Correct Answer :

1/2


Explanation :
No Explanation available for this question

x1,x2,x3,…,x50are are  fifty real numbers such that xr < xr+1 for r = 1, 2, 3... 49. Five numbers out of these are picked up at random. The probability that the five numbers have x20 as the middle is:

1.  20C2×30C2 / 50C3

2.  19C2×30C2 / 50C5

3.  19C2×31C2 / 50C5

4.  None of these

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4
Correct Answer :

19C2×30C2 / 50C5


Explanation :
No Explanation available for this question

A set of cards bearing the number 200-299 is used in a game. if card is drawn at random, what is the probability that it is divisible by:

1.  0.66

2.  0.33

3.  0.44

4.  0.55

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4
Correct Answer :

0.66


Explanation :
No Explanation available for this question

When two dice are thrown simultaneously, what is the probability that the sum of the two numbers that turn up is less than 11

1.  5/6

2.  11/12

3.  1/6

4.  1/12

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4
Correct Answer :

11/12


Explanation :
No Explanation available for this question

A dice is rolled three times and the sum of the numbers appearing on the uppermost face is 15. The chance that the first roll was a four is:

1.  2/5

2.  1/5

3.  1/6

4.  None of these

View Answer  
4
Correct Answer :

1/5


Explanation :
No Explanation available for this question
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