The least value of x, for which the expression x2+x+17 will not give a prime number, is
7
11
13
13
D.
13
The value of k for which kx+3y-k+3 = 0 and 12x+ky = k, have infinite solutions, is
0
-6
6
6
Francis has 18 eggs out of which 12 eggs were sold at 10% loss than the cost price. At what mark up should be sell the remaining eggs to cover his losses?
5%
10%
15%
15%
If a point (x, y) in a OXY plane is equidistant from (-1,1) and (4,3) then
10x+4y = 23
6x+4y = 23
–x+y = 7
–x+y = 7