Using the method of successive subtraction examine whether or not the following numbers are perfect cubes: 130      (ii) 345      (iii) 792                (iv)  1331

Explanation

To determine whether the given numbers are perfect cubes using the method of successive subtraction, we will follow these steps for each number:

### Step-by-Step Solution:

1. **Understanding the Method**: We will subtract a sequence of numbers from the given number. The sequence of numbers to be subtracted is generated using the formula:
\[ \text{Subtraction Number} = n^3 - (n-1)^3 = 3n^2 - 3n + 1 \]
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