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yellowho
- Master | Next Rank: 500 Posts
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In a class of 100
80 have atleast one pen
65 have atleast one pencil
70 have atleast one slate
1) What is the min and max of people with two?
2) What is the min max of people with all 3?
Looking at 2: (What am I doing wrong?)
Max: 65. that's the most pencil
Min: Using formula: Total= 3 group +double -2Triple + Neither
100= (80+65+70) +D-2Triple +0
-115=D-2T, re-write T=(D+115)/2
To minimize T, you must min D. How do you minimize D?
80 have atleast one pen
65 have atleast one pencil
70 have atleast one slate
1) What is the min and max of people with two?
2) What is the min max of people with all 3?
Looking at 2: (What am I doing wrong?)
Max: 65. that's the most pencil
Min: Using formula: Total= 3 group +double -2Triple + Neither
100= (80+65+70) +D-2Triple +0
-115=D-2T, re-write T=(D+115)/2
To minimize T, you must min D. How do you minimize D?
