exam
Maths Puzzle
Numerical Ability
A (0,4) B (7,1) find AB
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exam Other Question
if 27=123 and 31=133 then 15= ?
option are
a) 13
b) 11
c) 31
d) 33
Evaluate b^2 - 2bc + c^2 if b = 3 and c = -2.
3^2-2*3*(-2) + -2^2
I came up with 17. Is this right?