Question

Arithmetic mean or average including negative numbers

score 3.9k · Answer 1 · 2018-06-28 16:14:19

3.9k

Views

Arithmetic mean or average including negative numbers

Published on 28 Jun 2018 - 16:14

score 68 · Answer 2 · 2026-03-25 09:32:29

68

Views

Convert into a decimal number

Published on 25 Mar 2026 - 9:32

score 1.3k · Answer 3 · 2018-06-29 12:50:09

1.3k

Views

Proof: number of bits in the product of two binary numbers.

Published on 29 Jun 2018 - 12:50

score 33 · Answer 4 · 2018-07-01 15:11:19

33

Views

Intuition: why do we pad intermediate products' right-hand sides with zeroes in each iteration of long multiplication?

Published on 01 Jul 2018 - 15:11

score 2k · Answer 5 · 2026-03-25 16:20:42

2k

Views

squared with a negative number

Published on 25 Mar 2026 - 16:20

score 60 · Answer 6 · 2026-03-26 00:59:56

60

Views

Integer equivalent of If-conditions

Published on 26 Mar 2026 - 0:59

score 136 · Answer 7 · 2018-07-03 19:02:17

136

Views

$n^2+an+b$ has at least 2018 prime divisors

Published on 03 Jul 2018 - 19:02

score 1.5k · Answer 8 · 2026-03-25 07:41:54

1.5k

Views

How do I find the last two digits $2012^{2013}$?

Published on 25 Mar 2026 - 7:41

score 34 · Answer 9 · 2018-07-05 09:43:19

34

Views

How to find $x$ in this range?

Published on 05 Jul 2018 - 9:43

score 525 · Answer 10 · 2018-07-06 15:10:52

525

Views

Are the Weights Reversible in a Mod11 Check Digit Calculation?

Published on 06 Jul 2018 - 15:10

score 41 · Answer 11 · 2026-03-25 17:53:07

41

Views

if ${m/n}$ is an approximation to $\sqrt{2}$, prove $m/2n+n/m$ is always a better approximation.

Published on 25 Mar 2026 - 17:53

score 48 · Answer 12 · 2026-03-25 09:23:48

48

Views

What are the rules to simplify this equation?

Published on 25 Mar 2026 - 9:23

score 303 · Answer 13 · 2018-07-10 19:25:24

303

Views

When asked to solve a question without using a calculator, how much mental computation is reasonable?

Published on 10 Jul 2018 - 19:25

score 80 · Answer 14 · 2018-07-11 11:30:10

80

Views

For integers $a$ and $b$ , if $a \ne b$, then $ab \ne 1$.

Published on 11 Jul 2018 - 11:30

score 115 · Answer 15 · 2026-03-25 13:42:14

115

Views

On Sierpinski's Conjecture

Published on 25 Mar 2026 - 13:42

List Question

Arithmetic mean or average including negative numbers

Convert into a decimal number

Proof: number of bits in the product of two binary numbers.

Intuition: why do we pad intermediate products' right-hand sides with zeroes in each iteration of long multiplication?

squared with a negative number

Integer equivalent of If-conditions

$n^2+an+b$ has at least 2018 prime divisors

How do I find the last two digits $2012^{2013}$?

How to find $x$ in this range?

Are the Weights Reversible in a Mod11 Check Digit Calculation?

if ${m/n}$ is an approximation to $\sqrt{2}$, prove $m/2n+n/m$ is always a better approximation.

What are the rules to simplify this equation?

When asked to solve a question without using a calculator, how much mental computation is reasonable?

For integers $a$ and $b$ , if $a \ne b$, then $ab \ne 1$.

On Sierpinski's Conjecture

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