Question

Find $\log_e3 - \frac{\log_e9}{2^2} + \frac{\log_e27}{3^2} - \frac{\log_e81}{4^2} + ...$

score 88 · Answer 1 · 2026-04-17 07:54:32

88

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Find $\log_e3 - \frac{\log_e9}{2^2} + \frac{\log_e27}{3^2} - \frac{\log_e81}{4^2} + ...$

Published on 17 Apr 2026 - 7:54

score 492 · Answer 2 · 2026-04-16 10:21:53

492

Views

How do I find number of ways to choose 10 cards from a set of 7 blue and 8 red cards

Published on 16 Apr 2026 - 10:21

score 179 · Answer 3 · 2026-04-15 07:11:00

179

Views

A coin is tossed 1000 times and the result is stored as a string. Let x be the expected number of times the pattern TT occurs in the string. find x.

Published on 15 Apr 2026 - 7:11

score 77 · Answer 4 · 2026-04-14 11:45:27

77

Views

piling of two diffrent types of coins and permutation

Published on 14 Apr 2026 - 11:45

score 151 · Answer 5 · 2026-04-12 09:28:25

151

Views

Maximum sum of digits from a given formula

Published on 12 Apr 2026 - 9:28

score 42 · Answer 6 · 2026-04-15 11:52:52

42

Views

Upper bound on number of pairwise 'coupled' 'full' matrices of order $n$

Published on 15 Apr 2026 - 11:52

score 77 · Answer 7 · 2026-04-12 17:30:35

77

Views

How to solve for when this trigonometric function intersects the line $y=1$?

Published on 12 Apr 2026 - 17:30

score 107 · Answer 8 · 2026-04-12 01:19:47

107

Views

How can you solve this trigonometric equation algebraically?

Published on 12 Apr 2026 - 1:19

score 352 · Answer 9 · 2026-04-12 10:51:23

352

Views

Round Robin Problem Solving Questions

Published on 12 Apr 2026 - 10:51

score 68 · Answer 10 · 2026-04-16 08:41:10

68

Views

Can you define and elementary $f(x)$ such that $2^{x}<f(f(f(x)))<2^{2^x}$?

Published on 16 Apr 2026 - 8:41

score 191 · Answer 11 · 2026-04-14 16:04:32

191

Views

Spatial gradients as gradients in Lie algebras se(3) Tangent Space

Published on 14 Apr 2026 - 16:04

score 65 · Answer 12 · 2026-04-16 11:22:30

65

Views

Let $z_1,z_2$ be distinct complex numbers such that $|z_1| = |z_2|$. Prove that $\frac{1}{2}|z_1+z_2| < |z_1|.$

Published on 16 Apr 2026 - 11:22

score 64 · Answer 13 · 2026-04-11 10:54:17

64

Views

Show $U_{n}$ is open but sequence does not converge

Published on 11 Apr 2026 - 10:54

score 71 · Answer 14 · 2026-04-13 19:56:46

71

Views

A question related to compactness and connectedness of matrices

Published on 13 Apr 2026 - 19:56

score 115 · Answer 15 · 2026-04-11 13:12:45

115

Views

Why it this probability problem solved in this weird way?

Published on 11 Apr 2026 - 13:12

List Question

Find $\log_e3 - \frac{\log_e9}{2^2} + \frac{\log_e27}{3^2} - \frac{\log_e81}{4^2} + ...$

How do I find number of ways to choose 10 cards from a set of 7 blue and 8 red cards

A coin is tossed 1000 times and the result is stored as a string. Let x be the expected number of times the pattern TT occurs in the string. find x.

piling of two diffrent types of coins and permutation

Maximum sum of digits from a given formula

Upper bound on number of pairwise 'coupled' 'full' matrices of order $n$

How to solve for when this trigonometric function intersects the line $y=1$?

How can you solve this trigonometric equation algebraically?

Round Robin Problem Solving Questions

Can you define and elementary $f(x)$ such that $2^{x}<f(f(f(x)))<2^{2^x}$?

Spatial gradients as gradients in Lie algebras se(3) Tangent Space

Let $z_1,z_2$ be distinct complex numbers such that $|z_1| = |z_2|$. Prove that $\frac{1}{2}|z_1+z_2| < |z_1|.$

Show $U_{n}$ is open but sequence does not converge

A question related to compactness and connectedness of matrices

Why it this probability problem solved in this weird way?

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