بالنسبة لسؤال 8 ..
أول حاجة أوجدي التوتل الكلي ..
أضيفي خانتين .. وحدة بالطول وحدة بالعرض ..<!-- BEGIN TEMPLATE: mwaextraedit2_bbcode_table_output -->
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total |
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3 bedroom |
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2 bedroom |
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1 bedroom |
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6 |
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1 |
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2 |
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3 |
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1st floor |
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6 |
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2 |
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4 |
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0 |
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2nd floor |
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6 |
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1 |
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4 |
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1 |
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3rd floor |
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18 |
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4 |
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10 |
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4 |
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t0tal |
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الآن اللي في الزاوية على اليسار تحت .. هوّا التوتل الكلي .. اللي هوا المقام دااائما ..
8. what is the probability that it is on the 2nd floor or has 3 bedrooms?
بما أنه قال or اعرفي انو العلاقة جمع ..
p(2nd floor or has 3 bedrooms )= p( 2nd floor ) + p(3 bedrooms) - p( تقاطعهم )
= 6/18 + 4/18 - 2/18 =8/18 = 4/9
و بحاول أنزل لك شرح الباقي ..