Which of the following is equal to 1?

Given:

We need to find which expression is equal to 1.

Concept used:

Any non-zero number raised to the power of 0 is 1. So, x^o = 1.

Calculation:

Let's evaluate each expression:

1. 2° + 3° + 4°

⇒ 1 + 1 + 1 = 3, not equal to 1.

2. 2° × 3° × 4°

⇒ 1 × 1 × 1 = 1, which is equal to 1.

3. (3° − 2°) × 4°

⇒ (1 - 1) × 1 = 0, which is not equal to 1.

4. (3° − 2°) × (3° + 2°)

⇒ (1 - 1) × (1 + 1) = 0, not equal to 1.

∴ Among the given options, the expression 2° × 3° × 4° is equal to 1.