The thickness of DNA is about 3 * 10-9 meter. The thickness of the smallest thing visible to the naked
eye is 1 * 10-4 meter.

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?