Question 6 of 75
How many heptagons can be drawn by joining the vertices of a polygon with 10 sides?
    Correct Answer: B

Question 7 of 75
Four persons enter the lift of a seven storey building at the ground floor. In how many ways can they get out of the lift on any floor other than the ground floor?
    Correct Answer: B

Question 8 of 75
Ten different letters of an alphabet are given. 2 of these letters followed by 2 digits are used to number the products of a company. In haw many ways can the products be numbered?
    Correct Answer: D

Question 9 of 75
If P (2n+1, n-1): P (2n-1, n) = 3:5, find n.
    Correct Answer: B

Question 10 of 75
A polygon has 20 diagonals. How many sides does it have?
    Correct Answer: E