Đề thi bằng Tiếng Anh môn Tin học Lớp 11 - Mã đề: 367 - Năm học 2020-2021 - Sở GD&ĐT Nam Định (Có đáp án)

 NAM DINH DEPARTMENT OF CONTEST OF MATH AND SCIENCE IN ENGLISH
EDUCATION AND TRAINING School year: 2020 - 2021
 Subject: INFORMATICS – Grade 11 
 OFFICIAL Time allowed: 90 minutes
 CODE: 367
 I. PART 1. MULTIPLE CHOICE QUESTIONS (7.0 points)
 Write the correct answer (A, B, C, or D) for each of the following questions in the correspondingly 
 numbered space on your answer sheet.
 Question 1: The digits 1, 2, 3, 4 can be arranged to form twenty-four different four-digit numbers. If these 
 twenty-four numbers are then listed from the smallest to largest, in which position is 3214?
 A 13th B. 14th C. 15th D. 16th 
 Question 2: The sum of the digits of a five-digit positive integer is 2. (A five-digit integer cannot start with 
 zero.) The number of such integers is . 
 A. 1 B. 2 C. 3 D. 5
 Question 3: Use only digits 1, 2, 3, 4, and 5, a sequence is created as follows: one 1, two 2, three 3, four 4, 
 five 5, six 1, seven 2, and so on. The sequence appears as: 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 1, 1, 1, 1, 
 1, 1, 2, 2, .... The 100th digit in the sequence is .
 A. 1 B. 2 C. 3 D. 4 
 Question 4: How many different values of k is the 4-digit number 7k52 divisible by 12?
 A. 0 B. 1 C. 2 D. 3 
 Question 5: The numbers 49, 29, 9, 40, 22, 15, 53, 33, 13, 47 are grouped in pairs so that the sum of each 
 pair is the same. Which number is paired with 22?
 A. 33 B. 40 C. 49 D. 53
 Question 6: A number is called Beprisque if it is the only natural number between a prime number and a 
 perfect square (e.g. 10 is Beprisque but 12 is not). The number of two-digit Beprisque numbers (including 
 10) is .
 A. 4 B. 2 C. 3 D. 5
 Question 7: A number is formed using the digits 1, 2, ..., 9. Any digit can be used more than once, but 
 adjacent digits cannot be the same. Once a pair of adjacent digits has occurred, that pair, in that order, 
 cannot be used again. How many digits are there in the largest number?
 A. 72 B. 73 C. 144 D. 145 
 Question 8: Today is Wednesday. What day of the week will it be 100 days from now?
 A. Monday B. Tuesday C. Thursday D. Friday 
 Question 9: The 50th term in the sequence 5,6x,7x2 ,8x3,9x4 ,... is .
 49 50 50 49
 A. 54x B. 54x C. 45x D. 55x
 Question 10: When 12345678 is divided by 10, the remainder is .
 A. 8 B. 2 C. 4 D. 6 
 Question 11: What kind of operator denoted by “NOT” in Pascal (or “!” in C++) ? 
 A. Arithmetic operators B. Relational and comparison operators
 C. Logical operators D. Assignment operator
 Question 12: Which of the following language that computer can understand and execute?
 A. Pascal programming language B. None of above
 C. Machine language D. C programming language 
 Question 13: Which type of language is C++ or Pascal? 
 A. Middle-level language
 B. None of the above
 C. High-level language
 D. Low-level language
 Question 14: Which of the following is a correct identifier in C++ or Pascal programming language?
 Page 1/4 – Code 367 A. VAR_1234 B. 7VARNAME C. 7var_name D. $var_name
Question 15: Which of the following is NOT a correct identifier in C++ or Pascal programming language?
 A. A_2BC13 B. A_BC_321 C. _ABC123 D. 2_ABC13
Question 16: How many bits are there in a byte?
 A. 16 B. 6 C. 8 D. 4
Question 17: Which of the following is used for comment in C++ (or Pascal) ?
 A. // comment B. /* comment *// C. ((* comment *) D. */ comment */
Question 18: Which of the following is called division operator?
 A. + B. / C. * D. -
Question 19: How many relational operators are there in C++ (or Pascal)?
 A. 6 B. 5 C. 4 D. 3
Question 20: How many arthimetic operators are there in C++ (or Pascal)?
 A. 6 B. 5C. 4 D. 3
Question 21: The “longint” integer type in C++ (or “longint” integer type in Pascal) is .
 A. unsigned integer of at least 64 bits
 B. unsigned integer of at least 32 bits
 C. signed integer of at least 32 bits
 D. signed integer of at least 64 bits
Question 22: What is the condition in if statement?
 A. Constant B. Variable C. Boolean expression D. Statements
Question 23: What is the i:=i+1; statement in Pascal (or the i=i+1; statement in C++) called?
 A. Assignment statement
 B. Looping statement
 C. Conditional statement
 D. Compound statement
Question 24: Which of the following is false?
 A. Variable values can change while a program runs
 B. Variables can be processed by most of data
 C. All variables use the same amount of memory
 D. Variables must be stored in a database or file if they are to be retained when the program ends
Question 25: Which type does integers numbers with 2 bytes of allocated memory belong to?
 A. Integer type in Pascal (or short type in C++)
 B. Longint type in Pascal (or int type in C++)
 C. Char type in Pascal (or char type in C++)
 D. Boolean type in Pascal (or bool type in C++)
Question 26: What is the range of 16 bit signed integer?
 A. From 0 to 255 B. From -215 to 215-1 C. From 0 to 216-1 D. From -231 to 231-1
Question 27: What is the range of 32 bit unsigned integer?
 A. From 0 to 255 B. From -215 to 215-1 C. From 0 to 232-1 D. From -231 to 231-1
Question 28: To calculate the memory you will use when programming a problem, you need to know .
 A. the physical address location in memory
 B. variable’s name
 C. the size of the memory used by the data type of the variables
 D. the size of the computer's external memory
Question 29: How many bytes are allocated when you use two 16-bit signed integer variables and three 32-bit 
unsigned integer variables?
 A. 4 B. 12 C. 6 D. 16
Question 30: When a certain number is divided by 9, the quotient is 6 and the remainder is 6. The number 
is .
A. 60 B. 42 C. 33 D 67
Question 31: The sum of nine consecutive positive integers is 99. The smallest of these integers is .
A. 15 B. 11 C. 6 D. 7
 Page 2/4 – Code 367 You can choose either Pascal programming language or C++ programming language to do the following 
questions: 
Question 32: What is the value of x after running the following code:
 The code is writen by the Pascal The code is writen by the C++ Programming 
 Programming Language Language
 var #include 
 x,y:integer; using namespace std;
 begin int main()
 x:=15; y:=8; {
 x:=x+y; int x=15, y=8;
 y:=x-y; x=x+y;
 x:=x-y; y=x-y;
 write(x); x=x-y;
 readln; cout<<x;
 end. return 0;
 }
A. 15B. 23C. 8D. 7
Question 33: What is the value of s after running the following code:
 The code is writen by the Pascal The code is writen by the C++ Programming 
 Programming Language Language
 Var #include 
 s,i:integer; using namespace std;
 begin int main()
 s:=0; {
 for i:=2 to 10 do int s=0;
 if i mod 2=0 then for(int i=2;i<=10;i=i+2)
 s:=s+i; s=s+i;
 write(s); cout<<s;
 readln; return 0;
 end. }
A. 54B. 30C. 25D. 55
Question 34: What is the value of u after running the following code:
 The code is writen by the Pascal The code is writen by the C++ Programming 
 Programming Language Language
 Var x,y,u,i:integer; #include 
 begin using namespace std;
 x:=54; y:=81; u:=0; int main()
 for i:=1 to x do {
 if (x mod i=0) and (y int x=54, y=81,u;
 mod i =0) then for(int i=1;i<=x;i++)
 u:=i; if (x%i==0 && y%i==0)
 write(u); u=i;
 readln; cout<<u;
 end. return 0;
 }
A. 9B. 1C. 27D. 3
Question 35: What is the value of x after running the following code:
 The code is writen by the Pascal The code is writen by the C++ 
 Programming Language Programming Language
 Var #include 
 a,b,x:integer; using namespace std;
 begin int main()
 a:=1234; b:=23; x:=0; {
 while a>=b do int a=1234, b=23, x=0;
 begin while (a>=b)
 a:=a-b; {
 x:=x+1; a=a-b;
 end; x=x+1;
 write(x); }
 readln; cout<<x;
 end. return 0;}
 Page 3/4 – Code 367 A. 1211B. 53C. 1D. 15
II. PART II. PROBLEMS SOLVING (3.0 points)
 Write program by Pascal (or C ++) programming language to solve the following problems:
Question 1. (1.0 point)
 LCM (Least Common Multiple) of two positive integer numbers is the smallest positive integer 
number which can be divided by both numbers. For example, LCM of 15 and 20 is 60, and LCM of 5 and 7 
is 35. Your task is: “Given positive integers N and M, you must write a program which finds LCM of N 
and M.”
Input: It contains two positive integers, N (1 N 109 ) and M (1 M 109 ) . 
Output: It contains the required value from the task.
Example:
 Input Output
 15 20 60
Question 2. (1.0 point) 
 Your task is: “Given a number N, you must find its total number of divisors, then you check if they 
are odd or even”. For example, the number 10 has four divisors which are 1, 2, 5, 10. So, four is an even 
number. 
Input: It contains an positive integer, N (1 N 1018 )
Output: It contains “odd” if its total number of divisors is odd, and “even” if its total number of divisors 
is odd.
Example:
 Input Output
 100 odd
Question 3. (1.0 point)
 In math, a number is said to be divisible by another number if the remainder is 0. For example: 15 is 
divisible by 3, because 15 ÷ 3 = 5 exactly but 9 is not divisible by 2 because 9 ÷ 2 is 4 with 1 left over. Your 
task is: “Given positive integers m, n, a, and b, you must find how many integers from range m to n are 
divisible by a or b”
Input: It contains four positive integers, m, n, a, b (1 m n 1018 ,1 a,b 109 ,a b) .
Output: It contains the required value from the task.
Example:
 Input Output Explanation
 3 11 2 3 6 There are total 6 numbers from 3 to 11 which are divisible by 2 or 3 i.e, 
 3, 4, 6, 8, 9, 10
 -THE END-
Student’s full name: Student’s ID: ...
First observer’s name and signature: Second observer’s name and signature: ..
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