h2. Exemplu
table(example). |_. dezastru.in |_. dezastru.out |

| 3 1

| 3 2

  0.3 0.5 0.8

| 0.533333

| 0.263333

|
h3. Explicatie

table. |_. Permutare |_. Probabilitate sa supravietuiasca primului atac |
| 1 2 3
| 0.3

table(example). |_. Permutare |_. Probabilitate sa supravietuiasca primelor *2* atacuri |
| {+1 2+} 3
| 0.3 * 0.5 = 0.15

|

| 1 3 2
| 0.3

| {+1 3+} 2
| 0.3 * 0.8 = 0.24

|

| 2 1 3
| 0.5

| {+2 1+} 3
| 0.5 * 0.3 = 0.15

|

| 2 1 3
| 0.5

| {+2 3+} 1
| 0.5 * 0.8 = 0.40

|

| 3 1 2
| 0.8

| {+3 1+} 2
| 0.8 * 0.3 = 0.24

|

| 3 2 1
| 0.8

| {+3 2+} 1
| 0.8 * 0.5 = 0.40

|
Sunt in total $6$ permutari deci fiecare va aparea cu probabilitatea $1/6$.

Solutie: $0.3/6 + 0.3/6 + 0.5/6 + 0.5/6 + 0.8/6 + 0.8/6 = 0.533333$

Solutie: $0.15/6 + 0.24/6 + 0.15/6 + 0.40/6 + 0.24/6 + 0.40/6 = 0.263333$

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