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Loan Interest Calculator

This Excel spreadsheet lets you enter the APR, the loan period in months and the loan amount. It will then calculate the monthly loan repayments. For each month the spreadsheet will calculate the amount of interest and capital payable and give you a closing balance of the outstanding capital.

You can also enter an alternative repayment amount and the spreadsheet will calculate how many months the loan will take to pay off should this amount be paid instead.


The Birthday Problem

There is a birthday in your class today! Or will there be two? How likely is it that two people in your class have the same birthday? Say your class has 28 students.

The probability of two or more people sharing the same birthday with 28 people in the class is over 65%



It's a calendar for 2008.


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