# Each interior angle of a regular polygon is three times its exterior angle, then the number of sides of the regular polygon is

1.  9

2.  8

3.  10

4.   7

4

8

Explanation :
No Explanation available for this question

# Three solid metallic balls of radii 3 cm, 4 cm and 5 cm are melted and moulded into a single solid ball. The radius of the new ball is

1.  2 cm

2.  3 cm

3.  4 cm

4.   6 cm

4

6 cm

Explanation :
No Explanation available for this question

# A cistern can be filled with water by a pipe in 5 hours and it can; be emptied by a second pipe in 4hours. If both the pipes are opened when the cistern is full,the time in which it will be emptied is :

1.  9 hours

2.  18 hours

3.  20 hours

4.  20hours

4

20 hours

Explanation :
No Explanation available for this question

# The income of A is 10% more than that of B, if B’s income is x% less than the income of A, then the value of x is

1.

2.

3.  11

4.  10

4

Explanation :
No Explanation available for this question

# In a ABC, A = 90O, AL is drawn perpendicular to BC. Then BAL is equal to

1.  ALC

2.  ACB

3.  BAC

4.   B -BAL

4

ACB

Explanation :
No Explanation available for this question

# A and B can do a piece of work in 10 days, B and C in 15 days and C and A in 20 days. C alone can do the work in :

1.  60 days

2.  120 days

3.  80 days

4.  30 days

4

120 days

Explanation :
No Explanation available for this question

# A man can reach a certain place in 30 hours. If he reduces his speed by th, he goes 10 km less in that time. Find his speed per hour.

1.  6 km/hr

2.  5km/hr

3.  4 km/hr

4.  5 km/hr

4

5 km/hr

Explanation :
No Explanation available for this question

# In the adjoining figure, AE is the bisector of exterior CAD meeting BC produced in E. If AB = 10 cm, AC = 6 cm and BC = 12 cm, then CE is equal to :

1.  6 cm

2.  12 cm

3.  18 cm

4.  20 cm

4

18 cm

Explanation :
No Explanation available for this question

# A number is first decreased by 10% and then increased by 10%. The number so obtained is 50 less than the original number. The original number is

1.  5900

2.  5000

3.  5500

4.  5050

4

5000

Explanation :
No Explanation available for this question

1.  4 days

2.  5 days

3.  8 days

4.  10 days

4