Consider the following:
p : Question paper is hard.
q : I will fail in the examination.
Then translate the following sentence into symbols :
Question paper is not hard if and only if I will fail in the examination.

Answer

To translate the given sentence "Question paper is not hard if and only if I will fail in the examination" into symbols, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Statements**:
- Let \( p \): "Question paper is hard."
- Let \( q \): "I will fail in the examination."

2. **Negate the First Statement**:
- The phrase "Question paper is not hard" can be represented as \( \neg p \) (the negation of \( p \)).

3. **Understand the "if and only if" (iff)**:
- The phrase "if and only if" indicates a biconditional relationship. In logical symbols, this is represented as \( \iff \).

4. **Construct the Biconditional Statement**:
- The complete statement "Question paper is not hard if and only if I will fail in the examination" can be expressed as:
\[ \neg p \iff q \]

### Final Answer:
The symbolic representation of the statement is:
\[ \neg p \iff q \]