Probabaility that a pen manufactured by a company will be defective is 1/10.If 12 such pen are manufacturd,find yhe probability for?

1. exactly two will be defective

2. at least two will be defective

3.none will be defective

THANKS !!!!!!

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- October 6th 2008, 03:14 AMSameeraProbability ???
**Probabaility that a pen manufactured by a company will be defective is 1/10.If 12 such pen are manufacturd,find yhe probability for?**

1. exactly two will be defective

2. at least two will be defective

3.none will be defective

THANKS !!!!!! - October 6th 2008, 03:55 AMmr fantastic
- October 6th 2008, 03:56 AMKai