306. Have you ever bought something from Radio Shack?
307. Do you know what an oscilloscope does?
308. Have you ever used an oscilloscope?
309. Do you own an oscilloscope?
310. Have you ever used a microscope?
311. Do you own a microscope?
312. Have you ever used a telescope?
313. ...not for peering through someone's bedroom window?
314. Do you own a voltmeter?
315. Do you own any remote controlled vehicles?
316. Do you own a CB radio?
317. Have you ever had an amateur radio license?
318. Do you still have an amateur radio license?
319. Have you ever had an extra-class amateur radio license?
320. Have you ever used a chemistry set?
321. ...since the age of 13?
322. Have you ever used a rare earth element?
323. Do you own a slinky?
324. Does a slinky make you think about oscillations?
325. Do you own a Rubik's cube?
326. Are you able to solve Rubik's Cube?
327. ...without using the book?
328. ...in less than two minutes?
329. Have you ever tried to calculate the number of possible permutations a Rubik's Cube can have?