`5, 5r, 5r^2 `are sides of a triangle. Which value of r cannot be possible (a) `3//2` (b) `5//4` (c) `3//4` (d) `7//4`

If 5, 5r and 5r^(2) are the lengths of the sides of a triangle, then r cannot be equal to

If the sides of a triangle be in the ratio 2 : 3 : 4, the ratio of the corresponding altitudes is (a) 6 : 5 : 3 (b) 4 : 5 : 6 (c) 5 : 4 : 3 (d) 6 : 4 : 3

If cosA=4/5 , then the value of tanA is: (a) 3/5 (b) 3/4 (c) 4/3 (d) 5/3

The positive integers p,q and r, then possible value of r is 3(b)5(c)7(d)1

If A = { 3 , 5 , 7 , 9 , 4 }, B = { 1, 3, 5 } , C = { 2, 4, 6 ,7 } ; then A - { B ∩ C } =

IF the lengths of the side of triangle are 3,5A N D7, then the largest angle of the triangle is pi/2 (b) (5pi)/6 (c) (2pi)/3 (d) (3pi)/4

If A B C and D E F are two triangles such that (A B)/(D E)=(B C)/(E F)=(C A)/(F D)=2/5 , then A r e a( A B C): A r e a( D E F)= 2:5 (b) 4: 25 (c) 4: 15 (d) 8: 125

The sides of a triangle are 3cm,4cm and 5cm. The area (incm2) of the triangle formed by joining the mid-points of the sides of this triangle is (3)/(4) (b) (3)/(2) (c) 3 (d) 6

If p=4 , q=-3, r=2 find the value of 4p^2+5q-12r