Korea Grade 12 Probability and Statistics free practice questions with answers
Read question 1 and its full worked answer from paper 1 of our 20-paper Korea Grade 12 Probability and Statistics set, then download the 4-page PDF. These are original practice questions, not official past papers. Page updated 3 November 2026.
집합 X = {1, 2, …, 5}에서 집합 Y = {1, 2, …, 4}로의 함수의 개수는? [2점]
A 20
B 625
C 1024
D 1028
E 2048
Correct answer: C — 1024
- X의 각 원소에 대응시킬 수 있는 Y의 원소가 4개씩 있고 X의 원소가 5개이므로 함수의 개수는 45
입니다.
- 45 = 1024 입니다.
- 다른 선택지가 틀린 이유:
- A (20): n × m 으로 구했습니다.
- B (625): 정의역과 공역을 바꾸어 구했습니다.
- D (1028): 일대일 함수의 개수를 구했습니다.
- E (2048): 결과를 2배로 했습니다.
중복순열의 수는 nr 입니다. 각 자리에서 택하는 경우의 수를 곱합니다.
Your sample is downloading. Liked it? Korea Grade 12 Probability and Statistics Paper 1 is the full paper: 30 questions in 100 minutes on the 2015 revised Probability and Statistics course (counting, probability, statistics; 21 five-choice and 9 short-answer), written in Korean, no calculator, with a worked solution for every question.
Get Paper 1 for A$11.99See all 20 papers from A$11.99More free South Korea National Curriculum (Grades 10 to 12) samples
Questions about this sample
What is in the Korea Grade 12 Probability and Statistics free sample?
The first 3 questions from paper 1 of the set, in the real exam layout, followed by the step-by-step worked answers. It is a 4-page PDF; this page shows question 1 with its answer.
How many full Korea Grade 12 Probability and Statistics papers are there?
20 original papers for Grade 12 (고3) students in South Korea following the 2015 revised curriculum: Probability and Statistics (확률과 통계). Each is 30 questions in 100 minutes on the 2015 revised Probability and Statistics course (counting, probability, statistics; 21 five-choice and 9 short-answer), written in Korean, no calculator, with a worked solution for every question. Papers start at A$11.99 and download instantly as a PDF.
Are these official past papers?
No. The sample is taken from our own original practice paper and is not an official past paper or affiliated with any exam authority.