Question

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examples of non-decimal no.

Answer 1

hexadecimal - 1AB2
binary - 11011

Answer 2

11011= 1*2^4 +1*2^3 +0*2^2+1*2^1 +1*2^0=(16+8+2+1=27)
1AB2= break each valule into 4 digits: 1 becomes 0001. A is "10" 1010. B "11" is 1011. 2 is 0010= all together: 0001 1010 1011 0010[binary] and in decimal: 6834