#### 题目列表

a is a positive integer.

x is the remainder when 15a is divided by 6

x

#### Quantity B

2

n is a positive integer

#### Quantity A

The remainder when ($n^{2}$+3n+2) is divided by 6

#### Quantity B

2

The remainder is 1 when positive integer n is divided by 3

#### Quantity A

The remainder when n is divided by 5

#### Quantity B

2

If a class of P.E students are grouped into 6-person teams, then 2 students will be left. However, if all the students are grouped into 9-person teams, then how many students could be left?

Indicate all such numbers.

#### Quantity A

The remainder when 11,999,999 is divided by 12

#### Quantity B

11

Whats the units digit of ($2^{19}$ -32)?

#### Quantity A

The units digit of $9^{84}$

#### Quantity B

1

What is the units digit of $505^{2}$*$327^{3}$?
Whats the units digit of the positive difference between $32^{19}$ and 32?
The units digit of $7^{34}$ is x, and the units digit of $6^{34}$ is y. What is the value of the product xy?

#### Quantity A

The absolute value of units digit of $7^{n}$-$3^{n}$

#### Quantity B

3

k is a positive integer

#### Quantity A

The units digit of $149^{2k}$

#### Quantity B

The units digit of $143^{2k}$

n is a number from 21 to 29, inclusive. The units digit of n squared is 9.

#### Quantity A

The tens digit of n squared

#### Quantity B

6

R=$3^{7}$ $5^{11}$ $7^{15}$

W=$2^{3}$ $5^{15}$ $7^{19}$

What is the units digit of R-W?
What is the tens digit of $21^{(3^{50})}$?

#### Quantity A

The tens digit of

($4^{100}$)($5^{99}$)

#### Quantity B

The tens digit of

($4^{100}$)($5^{101}$)

What is the tens digit of $2007^{2007}$?
What`s the remainder when $3^{73}$ is divided by 5?
What is the remainder when ($3^{23}$-23) is divided by 10?
k is an integer greater than 2. The remainder when $3^{k}$ is divided by 13 is equal to r.

#### Quantity A

The remainder when 9 is divided by r

3

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