Some

約

yaku

(approximately, roughly)

〜か

-ka

((stressed form) a nonzero, unspecified proportion of)

ある

aru

(certain, unspecified or unknown)

ある

(a certain number)

いくつか

ikutsuka

(a certain number)

いくつか

ikutsuka

(indefinite quantity or number)

いくらか

ikuraka

(indefinite quantity or number)