Where do you guys regularly solve quant questions from?

From the practice section and daily challenges of percentyl, some from the coaching material I borrowed from my best friend.

Some people also have other books like Arun Sharma etc. I haven't used it so I don't know about that.

i have bought practice questions from clymber

There are many free resources for quants and I'd suggest you to practice daily or atleast every alternate day

arun sharma books