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In a class 80% have passed english,70% passed hindi, 10%
didnot passed either.If 144 students passed both. What is the
total strength of the class
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Answer / ravi
union defined as U
intersection defined as n
A U B = 144
A + B - (A n B)= (A U B)
0.8x +0.7x -144 = x
1.5x - 144 = x
1.5x - x =144
0.5x = 144
x = 288
So, total strength is 288
| Is This Answer Correct ? | 11 Yes | 4 No |
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