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1. If a numb.2. A cara.amongs selected among a list of 3 digit number then find probability that it is multiple of 13. |
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Answer» First three digit number divisible by 13 is 104and last is 988 which is 76 times 13Hencewhen a=104 and an=988 d=13hencean=a+(n-1)d988=104+(n-1)*13884=(n-1)*13n-1=68n=69 hence there are 69 numbers divisible by 13hence probability=69/999=23/333 |
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