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x is a positive integer. When x is divided by 2, 4, 6 or 8, the remainder is 1.

Quantity A

x

Quantity B

24


If the remainder is 27 when an integer is divided by 36, then the integer must be a multiple of which of the following integer?
If the remainder is 1 when integer n (n>1) is divided by 3, then ($$n^{2}$$+n-2) must be divisible by which double-digit number?

Indicate all such numbers.
x is a positive integer greater than 1. k is the remainder when $$x^{3}$$-x is divided by 3.

Quantity A

k

Quantity B

1


p is a positive odd number, while 5 is a factor of p+$$p^{2}$$

Quantity A

The remainder when p is divided by 5

Quantity B

0


When the even integer $$n$$ is divided by $$7$$, the remainder is $$3$$.

Quantity A

The remainder when $$n$$ is divided by $$14$$

Quantity B

$$10$$


k and n are both positive even integers

Quantity A

The remainder when $$k^{2}$$ +n is divided by 2

Quantity B

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


X=12$$3^{4}$$-12$$3^{3}$$+12$$3^{2}$$-123

What is the remainder when X is divided by 122?
What is the remainder when (12$$3^{3}$$+12$$4^{2}$$-12$$3^{2}$$+124) is divided by 122?
n is a positive integer. n is not divisible by 4. n is not divisible by 5.

Quantity A

The remainder when n is divided by 4

Quantity B

The remainder when n is divided by 5


n is a positive integer

Quantity A

The remainder when n is divided by 7

Quantity B

The remainder when 2n is divided by 7


What's the unit digit of the positive difference between $$27^{13}$$ and 27?
$$P=23^{25}$$-23

In the equation above, what is the units digit of $$P$$?
If the units digit of 2$$3^{n}$$ is 7 (8 < n < 13), then what is the value of n?
If the ones digit of $$7^{n}$$ is 9, which of the following could be the value of $$n$$?

Indicate all such values.
n, k and r are all positive integers

If $$n^{k}$$=10r+3, then k could be?

Indicate all that are possible.
$$n$$, $$k$$ and $$r$$ are all positive integers

If $$n^{k}=10r+3$$, then $$n$$ could be?

Indicate all that are possible.
What`s the product of the ones digit of $$7^{34}$$and $$6^{30}$$?
a=$$7^{n}$$,b=$$9^{n}$$. The sum of the ones digits of a and b could be (n is a positive integer)?

Indicate all such numbers.
If n is the units digit of $$7^{k}$$, where k is a positive integer, what is the greatest possible value of |n-7|?

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