Find the number of distinguishable permutations of the group of letters A , L , G , E , B , R , A

Given: quadrilateral talk is a parallelogram. prove: ta congruent lk and al congruent kt

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.