RD Sharma - Mathematics (Volume 2)

Book: RD Sharma - Mathematics (Volume 2)

Chapter: 33. Binomial Distribution

Subject: Maths - Class 12th

Q. No. 18 of MCQ

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Mark the correct alternative in the following:

A five-digit number is written down at random. The probability that the number is divisible by 5 and no two consecutive digits are identical, is


A 5-digit number is divisible by 5 if it ends with 0 0r 5.

So at ones place we have two digits out of 10 (one at a time)

Remaining places we have 9 digits out of 10

For first place ; we have only 8 digits out of 9 because 0 cannot be at first place

So probability

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