Let's decode the symbols based on the given conditions in the question:

• $Q$ means $+$ (addition)
• $J$ means $\times$ (multiplication)
• $T$ means $-$ (subtraction)
• $K$ means $\div$ (division)

We need to evaluate the expression:
$30 \, K \, 2 \, Q \, 3 \, J \, 6 \, T \, 5$

Replacing the symbols with their respective operations, the expression becomes: $30 \div 2 + 3 \times 6 - 5$

Step-by-step evaluation:

1. $30 \div 2 = 15$
2. $15 + 3 \times 6 - 5$
3. Next, perform multiplication: $3 \times 6 = 18$
4. So the expression now is: $15 + 18 - 5$
5. Perform addition: $15 + 18 = 33$
6. Finally, subtract: $33 - 5 = 28$

Thus, the final result is 28.

The correct answer is (B) 28.

Would you like further clarification? Here are five related questions to explore further:

1. How can the order of operations (BODMAS) affect complex expressions like this?
2. What happens if division or multiplication is handled incorrectly in such problems?
3. How do different operators relate to each other in terms of precedence?
4. Can you explain how replacing symbols with arithmetic operations alters a problem-solving approach?
5. What strategies are useful in decoding symbol-based mathematical problems?

Tip: Always follow the order of operations (BODMAS) to avoid errors in multi-step problems.