Mr. Montero wants to withdraw money from an ATM but he can't remember his PIN number. He knows it has the digits 2, 6, 8, and 9. He remembers that the first digit is and even number and the last digit is 6. List all PIN numbers that fit this description.

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

In a tutoring session, 2/3 of an hour was spent reviewing math problems. adelina attended 3/4 of the tutoring session. how much time did adelina spend at the tutoring session?

What ratio is proportional to 18/21