1. A true-false test contains 5 questions. How many ways can a student answer the test if ____. (a) the student answers all true? *Choose 5, 0, 1 (b) the student answers two of the questions "false" and the other three questions "true"? *Choose 5, 10, 1, 20 (c) the student answers two of the questions "true" and the other three questions "false"? *Choose 5, 10, 1, 20
1. A true-false test contains 5 questions. How many ways can a student answer the test if ____.
(a) the student answers all true? *Choose 5, 0, 1
(b) the student answers two of the questions "false" and the other three questions "true"? *Choose 5, 10, 1, 20
(c) the student answers two of the questions "true" and the other three questions "false"? *Choose 5, 10, 1, 20
2. Andrei picks a number. He doubles the number, squares the result, divides the square by 3, subtracts 30 from the quotient, and gets 18.
(a) Is it possible that Andrei picked a negative number? *Choose Yes, No, We cannot determine
(b) What are the possible numbers that Andrei could have picked?
3. Given the sequence of numbers, predict the next number that follow.
(a) 2, 4, 8, 16, 32, ___
(b) 2, 8, 26, 80, 242, ___
(c) 1, 2, 4, 7, 11, ___
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