Multiply the fractions and reduce to lowest terms:
1 12
4 25
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The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Which pair of numbers is relatively prime? a. 105 and 128 b. 130 and 273 c. 205 and 350 d. 273 and 333