If the digits in 65402 are randomly rearranged, what is the probability of ending up with a 4 digit number? [2 MARKS]

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Solution

Concept : 1 Mark
Result : 1 Mark

The four digit number is obtained only if, after rearrangement the leftmost digit is 0.
Since there is a 1 in 5 chance that this will happen, the required probability is 0.2.

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If the digits in 65402 are randomly rearranged, what is the probability of ending up with a 4 digit number? [2 MARKS]

Concept : 1 Mark Result : 1 Mark The four digit number is obtained only if, after rearrangement the leftmost digit is 0. Since there is a 1 in 5 chance that this will happen, the required probability is 0.2.

Concept : 1 Mark
Result : 1 Mark

The four digit number is obtained only if, after rearrangement the leftmost digit is 0.
Since there is a 1 in 5 chance that this will happen, the required probability is 0.2.