Which number completes the following series: 1, 2, 4, 8, 16, 32, 64, _?

You have the following data set:

.

Find the missing number in the data set.

If four different integers are selected, one from each of the following sets, what is the greater sum that these four integers could have?

W = {4, 6, 9, 10}

X = {4, 5, 8, 10}

Y = {3, 6, 7, 11}

Z = {5, 8, 10, 11}

Which of the following is not a rational number?

A team has a win-loss ratio of . If the team wins six games in a row, the win-loss ratio will now be . How many losses did the team have initially?

Find the missing number in the following set:

Alhough Danielle’s favorite flowers are tulips, she wants at least one each of three different kinds of flowers in her bouquet. Roses are twice as expensive as lilies and lilies are 25% of the price of tulips. If a rose costs $20 and Danielle only has $130, how many tulips can she buy?

Which set represents all the single-digits integers (0-9) that are either prime, a perfect square, or found in the number 68?

A sequence of boxes is constructed, the first six of which are seen above. What number is in the lower right corner of the ninth box?