Math, asked by slmmyahmd, 3 months ago

احتمال أن يكون 44142717 رقماً لهاتف مكون من 8 أرقام هي 4,7,1,1,4,2,4,7 يساوي 11680
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Answers

Answered by amitnrw
2

Given : Probability  of 8 digit ph one number 44142717 from digits  4,7,1,1,4,2,4,7 is  1/1680

To Find :  TRUE or FALSE.

Solution:  

4,7,1,1,4,2,4,7

Total Digits = 8

4  repeated 3 times

7 repeated 2 times

2 repeated 2 times

So total possible number  = 8! / 3! . 2! . 2 !

=  1,680

44142717  can be formed in1  wat only

Hence probability of selecting 44142717     is  1/1680

Hence given statement is TRUE.

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