Maheshwari wants to buy 7 floors in an 68 storied building whose numbering stars from 1 upto 68. But she has to follow certain rules which are as follows :_x005F_x000D_ 1) None of the floor should be a prime number_x005F_x000D_ 2) None of the digit of the floor should be a prime number_x005F_x000D_ 3) Maheshwari cannot buy the 1st floor as it is being assigned to the architect._x005F_x000D_ So how many options are left with Maheshwari to buy the floors ?

Maheshwari wants to buy 7 floors in an 68 storied building whose numbe

1.	Maheshwari wants to buy 7 floors in an 68 storied building whose numbering stars from 1 upto 68. But she has to follow certain rules which are as follows :_x005F_x000D_ 1) None of the floor should be a prime number_x005F_x000D_ 2) None of the digit of the floor should be a prime number_x005F_x000D_ 3) Maheshwari cannot buy the 1st floor as it is being assigned to the architect._x005F_x000D_ So how many options are left with Maheshwari to buy the floors ?
A.	11
B.	17
C.	13
D.	19
Answer» C. 13