# Which of the following facts are true about polygon I. The sum of interior angles of a polygon is 1080o then the number of sides of the polygon is 8. II. The sum of interior angles of a hexagon is 720o III. The sum of all exterior angles of a decagon is 540o IV. The ratio of the measure of an angle of regular octagon to the measure of its exterior angle is 3 : 1.

1.  I, II, III are correct

2.  II, III, IV are correct

3.  I, II, IV are correct

4.   All of these

4

I, II, IV are correct

Explanation :
No Explanation available for this question

# The value of is

1.  0.1

2.  10

3.  102

4.   103

4

10

Explanation :
No Explanation available for this question

# If a =4.965, b = 2.343 and c= 2.622, then the value of a3 – b3 – c3 – 3abc is

1.  -2

2.  -1

3.  0

4.   9.93

4

0

Explanation :
No Explanation available for this question

# If,thenis equal to

1.  5

2.  1/5

3.  3

4.  1/3

4

1/5

Explanation :
No Explanation available for this question

# If a * b = a + b + ab, then 3 * 4 – 2 * 3 is equal to

1.  6

2.  8

3.  10

4.   12

4

8

Explanation :
No Explanation available for this question

# Two equal circles of radius 4 cm intersect each other such that each passes through the centre of the other. The length of the common chord is

1.

2.

3.

4.  8 cm

4

Explanation :
No Explanation available for this question

# If o < x

1.  0

2.   1

3.

4.

4

1

Explanation :
No Explanation available for this question

# The value of the expression x4 – 17x2 + 17x2 – 17x + 17 at x = 16 is

1.  0

2.  1

3.  2

4.   3

4

1

Explanation :
No Explanation available for this question

# One chord of a circle is known to be 10.1 cm. The radius of this circle must be

1.  5 cm

2.  Greater than 5 cm

3.  Greater than or equal to 5 cm

4.   Less than 5 cm

4

Greater than 5 cm

Explanation :
No Explanation available for this question

1.  1

2.   0

3.

4.

4