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Option 4 : Psychology and Hindi
| Class | Subjects | Pass % students | Number of failed students | % of failed students | Total number of students(x) | pass number of students |
| 10 | Maths | 65 | 105 | 35 |
35% of x = 105 x = 300 |
195 |
| 10 | Hindi | 80 | 120 | 20 |
20% of x = 120 x = 600 |
480 |
| 11 | English | 40 | 360 | 60 |
60% of x = 360 x = 600 |
240 |
| 12 | Psychology | 75 | 100 | 25 |
25% of x = 100 x = 400 |
300 |
| 12 | Biology | 50 | 110 | 50 |
50% of x = 110 x = 220 |
110 |
| Total | 795 | 2120 | 1325 |
Psychology and Maths = 300 + 195
⇒ 495
Biology and Psychology = 110 + 300
⇒ 410
Hindi and Maths = 480 + 195
⇒ 675
Psychology and Hindi = 300 + 480
⇒ 780
∴ Two subjects Psychology and Hindi were the number of students who passed, the highest.
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