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### Questions (23)

 7 Average Distance Between Random Points on a Line 7 Does ((2^2)^2)^2… = 1 or 0? 5 Is $f(x) = x/x$ the same as $f(x) = 1$? 5 1D Random Walk, with different step sizes in each direction. 3 Intuitive explanation for dividing by n-1 when calculating sample variance?

### Reputation (548)

 +13 There are 20 red marbles, 10 blue marbles, and 5 white marbles in a jar. +5 How to solve this equation for x? $0 = (x+k)e^{-(x+k)^2}+(x-k)e^{-(x-k)^2}$ +15 A store is offering a 20% discount on a certain item. The store’s sale of the item is subject to a 6% sales tax. +15 Find the height of statue.

 135 Surprising identities / equations 2 Find distance between two poles. 2 Simple interest problem 1 Find the height of statue. 1 Probability of winning a game in tennis?

### Tags (33)

 3 geometry × 3 1 probability-theory 2 algebra-precalculus × 2 1 trigonometry 2 triangle 0 statistics × 3 1 probability × 9 0 combinatorics × 2 1 soft-question × 2 0 linear-algebra × 2

### Accounts (33)

 Area 51 6,012 rep 2638 Earth Science 2,957 rep 11148 Physics 2,721 rep 1031 Puzzling 2,470 rep 534 Skeptics 1,269 rep 1234