Question

What would Gauss do in this case: adding $1+\frac12+\frac13+\frac14+ \dots +\frac1{100}$?

score 1.1k · Answer 1 · 2026-03-29 07:40:29

1.1k

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What would Gauss do in this case: adding $1+\frac12+\frac13+\frac14+ \dots +\frac1{100}$?

Published on 29 Mar 2026 - 7:40

score 96 · Answer 2 · 2026-04-06 21:13:20

96

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If $(x^2+y^2+z^2)=2(x+z-1)$, then show that $x^3+y^3+z^3$ is constant and find its numeric value.

Published on 06 Apr 2026 - 21:13

score 380 · Answer 3 · 2026-04-11 01:27:14

380

Views

average of an inequality

Published on 11 Apr 2026 - 1:27

score 285 · Answer 4 · 2015-08-20 09:02:44

285

Views

Combination of $n$ objects taken $p$ at a time where $n$ contains $r$, $s$, and $t$ identical objects.

Published on 20 Aug 2015 - 9:02

score 18.8k · Answer 5 · 2026-04-12 10:30:33

18.8k

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What does $200\%$ faster mean? (How can something be more than $100\%$ faster?)

Published on 12 Apr 2026 - 10:30

score 152 · Answer 6 · 2026-04-02 07:21:39

152

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Tzaloa 2015 game problem (piles with $1,2,4 \dots 2^{19}$ coins each)

Published on 02 Apr 2026 - 7:21

score 70 · Answer 7 · 2026-04-11 19:20:08

70

Views

Exponential Function, Help Appreciated :-)

Published on 11 Apr 2026 - 19:20

score 398 · Answer 8 · 2015-08-21 14:15:48

398

Views

2+2=square root of 16. What's the appropriate answer?

Published on 21 Aug 2015 - 14:15

score 179 · Answer 9 · 2015-08-21 22:11:19

179

Views

When is $\sqrt{a^2}=\pm a$ and when is $\sqrt{a^2}=a$?

Published on 21 Aug 2015 - 22:11

score 61 · Answer 10 · 2026-04-10 22:25:36

61

Views

Order of parsing + and -

Published on 10 Apr 2026 - 22:25

score 34 · Answer 11 · 2026-04-10 10:14:54

34

Views

Check algebraic transformation with trial numbers?

Published on 10 Apr 2026 - 10:14

score 156 · Answer 12 · 2026-04-12 03:19:26

156

Views

Arithmetic and geometric sequence

Published on 12 Apr 2026 - 3:19

score 121 · Answer 13 · 2026-04-11 20:07:27

121

Views

"there exists" and "for some" are the same, right?

Published on 11 Apr 2026 - 20:07

score 273 · Answer 14 · 2026-04-11 00:53:35

273

Views

How many unique numbers can be obtained by adding two numbers from two different sequences?

Published on 11 Apr 2026 - 0:53

score 296 · Answer 15 · 2026-04-08 21:35:41

296

Views

Consecutive sets of consecutive numbers which add to the same total

Published on 08 Apr 2026 - 21:35

List Question

What would Gauss do in this case: adding $1+\frac12+\frac13+\frac14+ \dots +\frac1{100}$?

If $(x^2+y^2+z^2)=2(x+z-1)$, then show that $x^3+y^3+z^3$ is constant and find its numeric value.

average of an inequality

Combination of $n$ objects taken $p$ at a time where $n$ contains $r$, $s$, and $t$ identical objects.

What does $200\%$ faster mean? (How can something be more than $100\%$ faster?)

Tzaloa 2015 game problem (piles with $1,2,4 \dots 2^{19}$ coins each)

Exponential Function, Help Appreciated :-)

2+2=square root of 16. What's the appropriate answer?

When is $\sqrt{a^2}=\pm a$ and when is $\sqrt{a^2}=a$?

Order of parsing + and -

Check algebraic transformation with trial numbers?

Arithmetic and geometric sequence

"there exists" and "for some" are the same, right?

How many unique numbers can be obtained by adding two numbers from two different sequences?

Consecutive sets of consecutive numbers which add to the same total

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