exam Maths Puzzle Numerical Ability

A school sent 5 students to a spelling bee.The team was made up of 4 people.How many different teams of 4 students could be sent?

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3x - 9 < 5x + 2 Hi I hope I can explain the question.
The data set is known to be nonlinear. One of these quadratic regression models
X Y is for the data.