?Direction: Choose correct alternative to be written at the place of sign of interrogation.
\[\begin{align} ? & \,\,\,\,5\,\,\,\,\,4\,\,\,\,\,6 \\ ?& \,\,\,\,2\,\,\,\,\,4\,\,\,\,\,? \\ ?& \frac{7\,\,\,\,\,\,8\,\,\,\,\,9}{49\,\,\,\,64\,\,\,\,\,81} \\ \end{align}\]
A)1
B)3
C)4
D)5
E)6
Correct Answer:
B
Solution :
Col. 1 : 5 + 2 = 7 and 72 = 49 \[\therefore \] Col. 3: 6+3=9 and 92= 81
Hence the missing number = 3.