# probability of salary arriving on a friday

Jesus Angeles

Ranch Hand

Posts: 2068

posted 10 years ago

This one is easy; just came up on a lazy prod support 3rd shift.

Most of us get paid twice a month. And if the 15th or end of month falls on a weekend, the salary is paid on the friday.

Why is it that it seems that salary arrives more often on friday than any other day?

Show the reason why, as a probability.

Most of us get paid twice a month. And if the 15th or end of month falls on a weekend, the salary is paid on the friday.

Why is it that it seems that salary arrives more often on friday than any other day?

Show the reason why, as a probability.

Sam Codean

Ranch Hand

Posts: 194

posted 10 years ago

Probability of Salary Day being a Monday = 1/7

Probability of Salary Day being a Tuesday = 1/7

Probability of Salary Day being a Wednesday = 1/7

Probability of Salary Day being a Thursday = 1/7

Probability of Salary Day being a Friday = prob(Fri) + Prob (sat) + Prob(Sun)

= 1/7 + 1/7 + 1/7

= 3/7

Hence you feel that the salary mostly arrives on a Friday

Probability of Salary Day being a Tuesday = 1/7

Probability of Salary Day being a Wednesday = 1/7

Probability of Salary Day being a Thursday = 1/7

Probability of Salary Day being a Friday = prob(Fri) + Prob (sat) + Prob(Sun)

= 1/7 + 1/7 + 1/7

= 3/7

Hence you feel that the salary mostly arrives on a Friday

-Sam Codean<br />SCJP 1.4 (98%)<br />SCJD 5.0 (87.5%)

Sam Codean

Ranch Hand

Posts: 194

posted 10 years ago

Yes this is the right solution that's why we usually thinks that we get our salary mostly on friday.

For new upcoming salary which I really got this month also on Friday. So that's why we use to celebrate "Good Friday.

Isn't it.

For new upcoming salary which I really got this month also on Friday. So that's why we use to celebrate "Good Friday.

Isn't it.

The Best way to predict your future is to create it - Every great individual common man