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A new system of numbers is defined with only 4 symbols A, B,C & D indicating decimal numbers 0,1,2 & 3 respectively. The n

By Claire

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

About the author
Claire

The co-ordinates of the point of
intersection of lines x+2y=3 and 2x-
y=1 is *​

Write the largest and smallest numbers using each of the digits 2,7,8,0 and 1 only once and the find their differences​

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