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A restaurant has a total of 16 tables, each of which can seat a maximum of 4 people. If 50 people were sitting at the tables in the restaurant, with no tables empty, what is the greatest possible number of tables that could be occupied by just 1 person?
w, x, y and z are integers and 1 < w < x < y < z, w·x·y·z=210

Quantity A

w+z

Quantity B

10


Among positive integers from 1 to 19, inclusive, what is the ratio of the number of the multiples of 3 to the number of the multiples of 4?

Give your answer as a fraction.
A certain desk calendar shows the number of the day of the year and the number of days remaining in the year. If the calendar shows for Saturday, January 1, what does the calendar show for the Tuesday that is 20 weeks after the first Tuesday in January?

What is the number of integers that can be divisible by both 3 and 4 from 100 to 1,000, inclusive?
A set consists of all three-digit positive integers with the following properties. Each integer is of the form JKL, where J, K, and L are digits; all the digits are nonzero; and the two-digit integers JK and KL are each divisible by 9. HOW many integers are in the set?
If $$x$$ and $$y$$ are positive integers and $$\frac{(8)(7)(6)(5)(4)(3)}{(2^{x})(3^{y})}$$is an integer, what is the greatest possible value of $$xy$$?
n is a positive integer, and $$n^{2}$$ is divisible by 7.

Quantity A

The remainder when n is divided by 7

Quantity B

1


Both m and n are positive integers.

Quantity A

The remainder when (m+n) is divided by 2

Quantity B

The remainder when ($$m^{n}$$ is divided by 2


x < y, the remainder of x when divided by 9 is equal to the remainder of y when divided by 9.

Quantity A

The remainder when x is divided by 3

Quantity B

The remainder when y is divided by 3


n=4$$(x+20)^{2}$$-1, where x is a positive integer. Which of the following statements must be true?

Indicate all such statements.
What is the units digit of $$23^{21}$$-23?
What is the units digit of the positive difference between $$3^{7}*5^{4}*7^{11}$$ and $$4^{2}*5^{3}$$*11?
$$x$$, $$n$$ and $$k$$ are integers, $$0 \lt x \lt10^{7}$$, $$x=n^{k}$$, and the units digit of $$x$$ is $$5$$. $$x$$ is both a perfect square and a perfect cube. What is the value of $$x$$?
If $$T=4n^{2}+3$$ and $$n$$ is an integer, which of the following could be the units digit of $$T$$?

Indicate all such digits.

What is the remainder when $$3^{100}$$ is divided by 8?
What is the remainder when $$3^{27}$$ is divided by 5?
What's the remainder when $$9^{78}$$ is divided by 5?
mn=p, where p is a prime. What is the value of m+n in terms of p?
The sum of two prime numbers is 43.

Quantity A

The product of the two prime numbers

Quantity B

83


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