exam
Maths Puzzle
Numerical Ability
two numbers are happy twins if they are consecutive happy numbers. find a pair of happy twin numbers. there is a pair that is less then a 100.
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exam Other Question
solve the following of linear equation by elimination, i.e. solve for x and y, and explain the meaning of the answer:
3x+4y=-3
-6x-8y=6
Factor completely.
16m squared - 49n squared