probability

AIEEE 2015 Preparation › Algebra questions › probability

3 letters are to be sent to diff persons and addresses on the 3 envelops are also written. without looking at the addresses,the probabilities that the letters go into the right envelope is equal to

#Mathematics #Algebra

UP 0 DOWN 0 0 7
Post on FacebookPost anonymously?

7 Answers

1

skygirl ·2009-01-11 18:14:40

hmmm................ 1/3! =1/6 ?? (i am highly unsure... actually dunno probability... but stilll .......... [3])

UP 0 DOWN 0
Post on FacebookPost anonymously?

13

Ð”Ð²Ò¥Ñ—ÑuÏ now in medical c ·2009-01-11 19:33:08

probability of A getting the right letter is 1/3

then of the remaining 2 letters B gettnig the right is 1/2

C will automatically get the right one.

Hence probability is 1/3*1/2=1/6

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

akhil mm ·2009-01-11 21:27:05

good dude

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

skygirl ·2009-01-12 07:34:31

we can also tell it like....

3 letter can be posted in 3! ways.

only one is correct among them

so 1/3! = 1/6.

UP 0 DOWN 0
Post on FacebookPost anonymously?

62

Lokesh Verma ·2009-01-12 07:48:29

good one sky :)

UP 0 DOWN 0
Post on FacebookPost anonymously?

13

MAK ·2009-01-12 07:49:17

skygirl's solution is more logical in terms of probability... well, abhirup has also done a gud job... nyc... [1]

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

skygirl ·2009-01-12 07:58:40

tx bhaiya n tx ma'Q' :P

([3])

UP 0 DOWN 0
Post on FacebookPost anonymously?

Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

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

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

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

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

° ∂ ∞ 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