42 Funny identities 36 List of interesting integrals for early calculus students 28 What would have been our number system if humans had more than 10 fingers? Try to solve this puzzle. 22 A Five Equations problem? 21 Exclusion Inclusion Principle Induction Proof

### Reputation (8,302)

 +20 Exclusion Inclusion Principle Induction Proof +10 Proof by the substitution method that if $T(n) = T(n - 1) + \Theta(n)$ then $T(n)=\Theta(n^2)$ +10 Can someone offer an intuitive understanding of linear/quadratic probing and double hashing? +10 Why we need to know how to solve a quadratic?

### Questions (10)

 22 Swatting flies with a sledgehammer 10 Solutions of $p!q! = r!$ 8 A peculiar binomial coefficient identity 5 Finding the area of an annulus with one measurement 5 Visibility of the surface of a sphere

### Tags (119)

 92 algebra-precalculus × 22 34 induction × 9 62 algorithms × 26 33 linear-algebra × 6 62 combinatorics × 24 32 elementary-number-theory × 15 39 recurrence-relations × 18 28 puzzle 34 calculus × 16 28 number-systems

### Bookmarks (1)

 6 Finding the next term in a sequence.