Given below are the marks obtained by 15 students of a class in a test.
26, 39, 21, 25, 30, 28, 22, 19, 20, 43, 6, 17, 18, 20, 40
If the student who got less than 20 marks is declared to be fail, then how many students are pass ?

Answer

To find out how many students passed the test, we will follow these steps:

### Step 1: List the Marks
First, we will list the marks obtained by the 15 students:
- Marks: 26, 39, 21, 25, 30, 28, 22, 19, 20, 43, 6, 17, 18, 20, 40

### Step 2: Identify Failing Marks
Next, we need to identify which marks are considered failing. According to the question, students who scored less than 20 marks are declared to be fail. Therefore, we will look for marks less than 20:
- Failing Marks: 6, 17, 18, 19

### Step 3: Count Failing Students
Now, we will count how many students scored less than 20 marks:
- Failing Students: 6, 17, 18, 19 (Total = 4 students)

### Step 4: Calculate Passing Students
To find out how many students passed, we will subtract the number of failing students from the total number of students:
- Total Students = 15
- Passing Students = Total Students - Failing Students = 15 - 4 = 11

### Conclusion
Therefore, the number of students who passed the test is **11**.

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