JAMIA 2026 — Reasoning PYQ

The correct option is (a) 312.

Logic and Pattern Detection

This coding system uses the standard direct positional values of the English alphabet, where each letter corresponds to its numerical rank position ($A=1,B=2,C=3,D=4$, and so on).

Let us check the given codes against these positional values:

• For $AB$:

  $$\text{A}=1$$

  $$\text{B}=2$$

  Combining them gives $12$.

• For $BC$:

  $$\text{B}=2$$

  $$\text{C}=3$$

  Combining them gives $23$.

• For $BD$:

  $$\text{B}=2$$

  $$\text{D}=4$$

  Combining them gives $24$.

Finding the Code for CAB

Following the exact same pattern for the letters in $CAB$:

• $\text{C}=3$

• $\text{A}=1$

• $\text{B}=2$

Placing these digits side by side in order:

$$\text{CAB}=312$$

Conclusion

The value of $CAB$ is 312, which matches option (a).