book
Maths Puzzle
Numerical Ability
what does "x" equal?
(x+1)(x-3)=4
What does "x" equal?
x(x-2)= -6
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book Other Question
a group of 80 people attended a ball game. There were three times as many children as adults in the group. How many children were in the group?
simplify:-
(log3 135)/(log15 3) - (log3 5)/(log405 3)