List questions from multinomial-theorem

Published on 25 Mar 2026 - 9:29

57

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A question on the multinomial expansion

Published on 25 Mar 2026 - 9:22

33

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A Conceptual doubt on Multinomial Theorem.

Published on 25 Mar 2026 - 9:32

188

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What's the coefficent of $x^{20}$ in $(x^3+x^4+x^5+...)^5$? Only hint is needed.

Published on 25 Mar 2026 - 9:29

100

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Seven letters are selected from a bag w/o replacement. What's the probability the selection contains the letters "MAT" in any order?

Published on 25 Mar 2026 - 9:28

59

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Number of ways $n$ distinct objects can be fit into $k$ distinct boxes such that every box contains at least $a$ objects and no more than $b$ objects?

Published on 25 Mar 2026 - 9:27

307

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Sum of coefficients of $x^i$ (Multinomial theorem application)

Published on 25 Mar 2026 - 11:02

64

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How to calculate $E\bigl[\|\mathbf x\|^8\bigr]$

Published on 25 Mar 2026 - 9:23

100

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Find coefficient of $x^{10}$ in $x^2(x^2-3x^3-1)^6$

Published on 25 Mar 2026 - 9:28

800

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Is there a simple explanation on the multinomial theorem?

Published on 25 Mar 2026 - 9:23

39

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Algebraic identity for summing all arrangements of n choose k terms

Published on 25 Mar 2026 - 11:06

249

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Finding the number of different terms in multinomial expansion

Published on 25 Mar 2026 - 11:05

92

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In the multinomial expansion of $(a+b+c)^5$ , why does "a" have $5 \choose 1$ positions?

Published on 25 Mar 2026 - 11:06

92

Views

Multinomial theorem with imposed conditions

Published on 25 Mar 2026 - 9:32

108

Views

Counting problem based on digital sum divisibility

Published on 25 Mar 2026 - 9:32

List Question

How many terms are there in expansion of $(x_1 +x_2+\ldots +x_r)^n$

A question on the multinomial expansion

A Conceptual doubt on Multinomial Theorem.

What's the coefficent of $x^{20}$ in $(x^3+x^4+x^5+...)^5$? Only hint is needed.

Seven letters are selected from a bag w/o replacement. What's the probability the selection contains the letters "MAT" in any order?

Number of ways $n$ distinct objects can be fit into $k$ distinct boxes such that every box contains at least $a$ objects and no more than $b$ objects?

Sum of coefficients of $x^i$ (Multinomial theorem application)

How to calculate $E\bigl[\|\mathbf x\|^8\bigr]$

Find coefficient of $x^{10}$ in $x^2(x^2-3x^3-1)^6$

Is there a simple explanation on the multinomial theorem?

Algebraic identity for summing all arrangements of n choose k terms

Finding the number of different terms in multinomial expansion

In the multinomial expansion of $(a+b+c)^5$ , why does "a" have $5 \choose 1$ positions?

Multinomial theorem with imposed conditions

Counting problem based on digital sum divisibility

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