Communication is 11000001010101111. If you look at the representations for electronics & engineering – you’ll find that they are both 15-digit binary representations for 11-letters alphabets. The last 4 digits are simply redundant bits and will be considered later.
So, we’re basically left with ”Electronics” = 01011010011 & “Engineering” = 00100000001 which gives a single digit for each letter in the words. So, it’s just alphabets with a coding scheme. Each alphabet has a corresponding bit.
Look more closely, and you’ll find the following pattern -
& so on.. which easily gives the equivalent for communication as 1100000101010
Now for the tricky part – the 4 redundant bits in this case would be 1 since, the last bit of the 11-digit representation is 0. Hence, giving 11000001010101111. Easy.