62 What is the sum of all positive even divisors of 1000? 9 Explain the concept behind solving $\sin(x)\cos(x) + \cos(x) = 0$, from Paul's Online Math Notes 9 A function in which addition and multiplication behave the same way 8 Why is Halloween the same as Christmas 7 Number of ways $6$ persons of different height be seated So that every one in front is shorter?

### Reputation (2,786)

 +20 Number of ways $6$ persons of different height be seated So that every one in front is shorter? +10 Why do I have to negate the definition of an intersection to prove that complement (A∩B) = complement(A) ∪ complement(B)? +10 Is $(x+1)/(x^2-1)$ defined for $x=-1$? +10 Dice roll game probability

### Questions (0)

This user has not asked any questions

### Tags (82)

 83 elementary-number-theory × 10 24 algebra-precalculus × 11 69 summation × 6 19 functions × 5 62 factoring 17 probability × 19 62 divisor-sum 12 trigonometry × 3 26 combinatorics × 16 11 discrete-mathematics × 8

### Bookmarks (0)

This user has no bookmarked questions.