42:56::110:?

Question:

42:56::110:?

Answer:

132

Solution:

As,

6*7=42 : 7*8=56

(6,7,8)=(a,b,c) so, a*b=b*c i.e. 42:56

Similarly,

10*11 = 110 : 11*12 = 132

(10,11,12)=(a,b,c) so, a*b=b*c i.e. 11:132