Direction: Refer to the Venn diagram in the given image image_b95340.png showing the number of Bengali students of age 18 attending certain online courses during complete lockdown:
The square represents the students who are learning Spanish, the triangle is for those who are learning music, and the circle is for those who are learning photography. Study the diagram and answer the question.

What approximately is the percentage of students who are learning one thing only?
- A48
- B49
- C50
- D51
Solution & Step-by-step Explanation
From the Venn diagram provided in
1. Students learning only one course:
* Only Spanish (inside the square only) = 35
* Only Photography (inside the circle only) = 30
* Only Music (inside the triangle only) = 50
2. Total number of students represented in the diagram:
3. Percentage calculation:
Rounding to the nearest whole number gives approximately 48%.
image_b95340.png, we can extract the number of students in each specific section:1. Students learning only one course:
* Only Spanish (inside the square only) = 35
* Only Photography (inside the circle only) = 30
* Only Music (inside the triangle only) = 50
2. Total number of students represented in the diagram:
3. Percentage calculation:
Rounding to the nearest whole number gives approximately 48%.