This is for permutations and combinations, what is the answer?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Afamily of five rents a kayak and splits the total time, k, equally. each family member spent less than 25 minutes kayaking. which values can be used to complete the math sentence below so that it accurately represents the situation? intro done

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab