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I feel nauseous from taking a SSRI, does anyone have any ideas for things that can make my stomach feel better? (as in, if you have direct experience with dealing with nausea from antidepressants?)

How many 4-digit numbers begin w/ and odd digit and end w/ and even digit?

The answer is 2,500.

This was on my practice GRE and I don't know how to solve it. I think I'm suppose to use facortials, but I can't get it to work out.

When the positive integer n is divided by 7, the quotient is q and the remainder is 4. When 2n is divided by 7 the remainder is 1- what is the quotient in terms of q?

This was on a practice GRE and I don't know how to approach it. Thanks for any ideas about how to solve it.

It's raining really hard right now, and there's water dripping from the center of my light fixture (It's a ceiling fan with light with a porcelain covering.) This is weird to me because there's a floor above me (it's a bathroom above my room). Is this dangerous that the light is getting wet?

On my bike- when I shift to speed "4" then sometimes it will catch every few pedals and sometimes it will be fine. When I'm going uphill and I turn it to "1" then it will catch many times as I pedal (make a clunk-clunk sound and my foot will fall off the pedal).

Why does it do this just for these speeds? Can do anything to prevent/fix this?