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There are 100 white balls, 100 red balls, and 100 green balls in the box. What is the minimum number of balls that must be removed in order to ensure that four balls of the same color have been removed?


There are a total of 40 red, yellow or blue balls in a box. Each ball is marked with a number out of 1, 2, 3 and 4 on the side. The figure in the shaded area below each shows the number of balls in that category. For example, the number of red balls marked with the number "1" is 12. What is the minimum number of balls to be taken out of the box to ensure that you have at least one ball of each color and at least one ball of each marked number?
x and y are both integers

$$x^{2}$$-$$y^{2}$$=27

Quantity A: x

Quantity B: 10
The integer v is greater than 1. If v is the square of an integer, which of the following numbers must also be the square of an integer?

Indicate all such numbers.
a + $$\frac{1}{a}$$= $$\sqrt{5}$$

Quantity A

$$a^{2}$$+$$(\frac{1}{a})^{2}$$

Quantity B

3


(x+$$\frac{1}{x}$$)=$$\sqrt{5}$$

Quantity A

$$x^{2}$$+$$\frac{1}{x^{2}}$$

Quantity B

3


$$\frac{0.99999999}{1.0001}$$ - $$\frac{0.99999991}{1.0003}$$ = ?

Quantity A

$$x^{2}$$+1

Quantity B

2x-1


xy+y < 0

Quantity A

x

Quantity B

y


Quantity A

$$(2m+1)^{2}$$

Quantity B

$$(2(m+1))^{2}$$


$$x^{2}$$-$$y^{2}$$=-10

Quantity A

x+y

Quantity B

x-y


x is a negative integer

Quantity A

$$(2^x)^2$$

Quantity B

$$(x^2)^x$$


n is a positive integer

Quantity A: $$(\frac{1}{2})^{n}$$

Quantity B: (3)·$$(\frac{1}{10})^{n}$$

Quantity A

$$\frac{x}{(x+1)}$$

Quantity B

1


$$x \gt 0$$

$$y \gt 0$$

Quantity A

($$\sqrt{x}$$)($$\sqrt{y}$$)

Quantity B

$$\sqrt{x+y}$$


$$p$$, $$s$$, and $$t$$ are probabilities and $$0 \lt p \lt s \lt t$$.

Quantity A

$$p+st$$

Quantity B

$$s(p+t)$$


If n=$$2^{3}$$, then$$n^{n}$$=
s and t are positive integers, and $$32^{s}$$=$$2^{t}$$.

Quantity A

s:t

Quantity B

0.2


$$x \geq 0$$

Quantity A

$$2^{x}$$+$$2^{x}$$+$$2^{x}$$+$$2^{x}$$

Quantity B

$$4^{x}$$+$$4^{x}$$


If a, b, x, and y are positive integers, and $$13^{a}$$*$$13^{b}$$=($$13^{x})^{y}$$=$$13^{13}$$, what is the average (arithmetic mean) of a, b, x, and y?

Give your answer as a decimal.

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