Answer:
21 bits
Explanation:
The formula that will be used is given as
2^No. of bits = No. of combinations
There we need to find
No. of Bits?
Given is
No of Combinations = 2 million = 20,000,00
so,
2^ No. of bits = 20,000,00
so
No.of bits = Log 2 (20,000,00) = log 10 (20,000,00)/log 10 (2)
= 20.93 which is approximately = 21
So, 21 bits required for 2 million numbers.
It means that, if we have 21 number of bits, we can make 2 million combinations.
for example
If we have 2 bits
we can make
2^2 combinations which is equal to 4.
So four combinations with 2 bits are given below:
0 00
1 01
2 10
3 11
