-> 2nd ans is 110 b'coz u 'll get a 11*10 matrix.
-> 4th ans is
a)100km(b'coz they r in a.p)
b)200km
-> 5th ans is 1/3=0.33(this is b'coz two nos can b either > or < or =)
-> 9th X
->10th 11c2=11*10/2=55