Question

If we select a year from 1890 to 1920 (both inclusive). The probability that the selected year will be a leap year
(where p & q are coprime). Number of prime digits in (pq) is
Option​

Answer 1

Answer:

0

Step-by-step explanation:

the first leap year in the given range is 1892. We will use a.p to find the number of years, p-   1892+ (p-1)4=1920. On solving p will come out to be 8. The total number of years q from 1890 to 1920 is 31. Therefore the probablity will come out to be 8/31. p*q will come out as 248, and the number will have 0 prime digits. Therefore the answer is 0.

Answer 2

Answer:

4

Step-by-step explanation:

8/32 since they both are inclusive

8/32 = 1/4

4 = 2 x 2

Hence, 2 prime digits

:D