
Step 1: Check who is never matched
We need to find the person whose answer key was not copied by anyone.
Jassi’s answers: b d d c b d a c a b
Compare with others: - Munna ≠ Jassi (only Munna is original) - Chinky, Lucky, Arun, Ritesh etc. — None exactly match Jassi.
Conclusion: No one used Jassi’s answers as base.

In a sequence of numbers, each term is generated by multiplying the previous term by 2 and then subtracting 1. If the first term is 3, what is the fourth term in the sequence?
A pie chart shows the distribution of students across 5 faculties in a university. If 20% are in Arts, 25% in Science, 15% in Law, 30% in Engineering, and the rest in Commerce, what is the angle (in degrees) for Commerce?
For any natural number $k$, let $a_k = 3^k$. The smallest natural number $m$ for which \[ (a_1)^1 \times (a_2)^2 \times \dots \times (a_{20})^{20} \;<\; a_{21} \times a_{22} \times \dots \times a_{20+m} \] is: