Unicode system uses patterns up to 21-bits to represent the symbols used in languages worldwide. How many symbols could be represented in this system?
Don’t use calculators to compute the exact value but rather show the expression (formula) and explain it.
Currently full uni-code uses 32-bit representation but only 21 bits are used. Higher 11 bits are reserved as 0.
Now each bit from 21 bits can have either value as 0 or 1. This means each bit can support 2 values.
So total values 21 bit can support = 221 (number of symbols)
Formula is - (number of values 1 bit can take)(number of bits)
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