A new system of numbers is defined with only 4 symbols A, B,C & D indicating decimal numbers 0,1,2 & 3 respectively. The numbers 4,5,6.. will be written as BA, BB, BC,. In this system, BAD will correspond to which decimal number?
a) 5
b) 22
c) 19
d) 43
e) 104
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Answer:
a
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