Question

Why probability of a diamond followed by an ace on drawing $2$ cards from a shuffled standard deck is not $1/51$?

score 964 · Answer 1 · 2026-04-14 04:10:23

964

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Why probability of a diamond followed by an ace on drawing $2$ cards from a shuffled standard deck is not $1/51$?

Published on 14 Apr 2026 - 4:10

score 89 · Answer 2 · 2026-04-13 21:22:25

89

Views

Probability that N i.i.d. draws from a multinomial distribution have made all events appear

Published on 13 Apr 2026 - 21:22

score 23 · Answer 3 · 2026-04-15 21:11:22

23

Views

Calculating number of pages when the number of lines of even pages is different from odd

Published on 15 Apr 2026 - 21:11

score 30 · Answer 4 · 2026-04-08 21:29:13

30

Views

What does it mean, in a mathematical context to “apply strategies”?

Published on 08 Apr 2026 - 21:29

score 93 · Answer 5 · 2026-04-15 19:29:57

93

Views

My solution to finding probability of winning a game is 21/512, whereas the answer given is 21/1205. What is logical error in my solution.

Published on 15 Apr 2026 - 19:29

score 76 · Answer 6 · 2026-04-08 19:37:50

76

Views

Solving a composition of functions

Published on 08 Apr 2026 - 19:37

score 114 · Answer 7 · 2026-04-15 02:06:22

114

Views

A pond contains two types of fish: 10 blue and 9 red. Among red fish, $\frac{1}{4}$ are poisonous and among blue fish $\frac{3}{5}$ are poisonous....

Published on 15 Apr 2026 - 2:06

score 91 · Answer 8 · 2026-04-12 17:51:30

91

Views

We have three players A, B and C. They roll an honest die, first A, then B, and lastly C until someone is the first to get an even number...

Published on 12 Apr 2026 - 17:51

score 188 · Answer 9 · 2026-04-15 00:08:30

188

Views

Do rearrangements of $\mathbb{N}$ necessarily have fixed points with respect to placement distance?

Published on 15 Apr 2026 - 0:08

score 441 · Answer 10 · 2026-04-15 12:37:15

441

Views

Prove that there is a perfect cube between n and 3n for any integer n≥10

Published on 15 Apr 2026 - 12:37

score 216 · Answer 11 · 2026-04-10 22:41:36

216

Views

Hypothesis Testing in Python: One sample T Test without Standard deviation

Published on 10 Apr 2026 - 22:41

score 273 · Answer 12 · 2026-04-12 13:10:04

273

Views

A linear algebra problem about linear subspace of $GL_n$

Published on 12 Apr 2026 - 13:10

score 31 · Answer 13 · 2026-04-16 07:52:22

31

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Let $A_1,A_2 \in \mathbb R$ open sets and denote $F_1=\mathbb R−A_1$.Show that $F_1−A_2$ is closed.

Published on 16 Apr 2026 - 7:52

score 86 · Answer 14 · 2026-04-15 10:29:19

86

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Let $a$ be a set accumulation point $X$. Show that there is either an increasing sequence, or a decreasing sequence of...

Published on 15 Apr 2026 - 10:29

score 103 · Answer 15 · 2026-04-16 15:51:49

103

Views

a) Prove: for any $X,Y \subset \mathbb R$ we have $int(X) \cup int(Y) \subset int(X \cup Y)$...

Published on 16 Apr 2026 - 15:51

List Question

Why probability of a diamond followed by an ace on drawing $2$ cards from a shuffled standard deck is not $1/51$?

Probability that N i.i.d. draws from a multinomial distribution have made all events appear

Calculating number of pages when the number of lines of even pages is different from odd

What does it mean, in a mathematical context to “apply strategies”?

My solution to finding probability of winning a game is 21/512, whereas the answer given is 21/1205. What is logical error in my solution.

Solving a composition of functions

A pond contains two types of fish: 10 blue and 9 red. Among red fish, $\frac{1}{4}$ are poisonous and among blue fish $\frac{3}{5}$ are poisonous....

We have three players A, B and C. They roll an honest die, first A, then B, and lastly C until someone is the first to get an even number...

Do rearrangements of $\mathbb{N}$ necessarily have fixed points with respect to placement distance?

Prove that there is a perfect cube between n and 3n for any integer n≥10

Hypothesis Testing in Python: One sample T Test without Standard deviation

A linear algebra problem about linear subspace of $GL_n$

Let $A_1,A_2 \in \mathbb R$ open sets and denote $F_1=\mathbb R−A_1$.Show that $F_1−A_2$ is closed.

Let $a$ be a set accumulation point $X$. Show that there is either an increasing sequence, or a decreasing sequence of...

a) Prove: for any $X,Y \subset \mathbb R$ we have $int(X) \cup int(Y) \subset int(X \cup Y)$...

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