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Maths Puzzle
Numerical Ability
Data Interpretation
the operation * is applied to a number gives as its result 10 subtract from twice the number. what is *(*9)?
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Book Other Question
T_(k+1)/T_k
how do we simplify this ratio pls help. thanks in advance
the sum of the ages of two children is 12 and their product is 32. The age of elder one is?