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n balls are picked, one by one from four urns each containing n identical balls of green, red, white and blue colours. The number of ways, when no two consecutive pickings are from same urn and balls of all the colours are picked,

#Mathematics #Algebra

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7 Answers

11

Subash ·2009-02-03 08:54:10

please reply to this one

ans is 12(3^n-2-2^n-1+1)

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11

Subash ·2009-02-03 09:37:03

im not getting this completely please help me

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21

tapanmast Vora ·2009-02-03 09:41:25

Are ther options???

it wud get 500 times simpler.....

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62

Lokesh Verma ·2009-02-03 09:42:23

Hint: Try inclusion exclusion principle!

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11

Subash ·2009-02-03 09:42:31

i know that too

i want the nice big subjective method for this one( thats why dint take the trouble to post the options)

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1

chakde ·2009-02-04 10:10:52

Y IS THE ANS BLACKENED???

IS THIS THE ANS : 12(3^(n-2)-2^(n-1)+1) ???

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11

Subash ·2009-02-14 22:48:19

bhaiyya elaborate ur hint im not getting it

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

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∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω