[" 6."16:4:9:?],[[" (a) "4," (b) "25," (c) "1," (d) "2]]

4, 9, 16, 25, 49, 121

5, 16, 6, 16, 7, 16, 9 (a) 9 (b) 7 (c) 6 (d) None of these

The circumferences of two circles are in the ratio 3: 4. The ratio of their areas is (a) 3:4 (b) 4:3 (c)9:16 (d) 16 :9

triangle ABC~triangle PQR . A(triangle ABC):A(triangle PQR)=9:16 . Find BC:QR. a) 3/4 b) 4/3 c) 9/16 d) 16/9

Divide: (i) 3/8 by 4 (ii) 9/(16) by 6

Prove that the following sets are equivalent {1, 2, 3, 4, 5, 6.....}, (2, 4, 6, 8, 10,...) (1,3,5, 7, 9,...), {1, 4, 9, 16, 25...)

If the curves y^2=6x , 9x^2+by^2=16 intersect each other at right angles then the value of b is: (1) 6 (2) 7/2 (3) 4 (4) 9/2

If the curves y^2=6x , 9x^2+by^2=16 intersect each other at right angles then the value of b is: (1) 6 (2) 7/2 (3) 4 (4) 9/2

If the curves y^2=6x , 9x^2+by^2=16 intersect each other at right angles then the value of b is: (1) 6 (2) 7/2 (3) 4 (4) 9/2