exam
Maths Puzzle
Numerical Ability
a girl is 2/3 older than her sister. In 6 years, she will be 4/5 older and in 15 years it will be 7/8. Both girls are under 10 years old. what are their ages?
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exam Other Question
Evaluate. (-1)(-1) - 25
I need a full definition and three examples of Non-linear Function
Please can you help me?