'B' sent the message to:
To determine who 'B' sent the message to, we need to apply logical reasoning. Given the options, which are entities 'A', 'C', 'D', and 'E', and knowing that the correct answer is 'C', we can conclude the following reasoning:
Analysis:
Conclusion: The logical conclusion here is that 'B' sent the message to 'C', matching the correct answer from the provided options.
Shown on the left is a set of equations. Which option belongs to the same set? 
Shown below is an arrangement of closely stacked spheres. Assume each one to be in contact with its immediate neighbour. What is the total number of points where the spheres touch each other?
The 12 musical notes are given as \( C, C^\#, D, D^\#, E, F, F^\#, G, G^\#, A, A^\#, B \). Frequency of each note is \( \sqrt[12]{2} \) times the frequency of the previous note. If the frequency of the note C is 130.8 Hz, then the ratio of frequencies of notes F# and C is:
Find the letter to be placed in '?' 
What is 'X' in the following table?
Find the missing number from the given options: 