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4/15 of the 315 members of a book club are male. how many female members are there in the club?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

Agrasshopper weighs 0.89 grams. express the grasshopper’s weight in scientific notation.

Ling is using fraction strips to add 2/3 and 7/12's the sum is one whole plus how many twelves?