A singer has 20 pairs of earrings , plus another 5 individual earrings which do not match. One morning she reaches into her drawer without looking and pulls out a random earring. What is the probability that the earring she pulls out is part of a pair earrings?

The gades foundation and hbm corporation are eager to donate generously to their favorite charities. the gades foundation donated $250 in the first month, and each month afterward their cumulative donation total increases by 100$ the hbm corporation donated $64, in the first month, and each month afterward their cumulative donation total increases by 75%. in which month will the hbm corporation's cumulative donation total first exceed the gades foundations' cumulative donation total?

You have 3 boxes, one "strawberries"; one "mentos" and one "mixed".but you know that all the labels are in incorrect order .how do you know witch is witch?

Three times the sum of a number and seven is negative thirty-six. what is the number?