Find the squares of the following numbers: (I)35            (ii)   105               (iii)   2005

Explanation

To find the squares of the numbers 35, 105, and 2005, we can use a specific method for numbers that end with 5. The formula for squaring a number of the form \( n5 \) is:

\[ (n \times (n + 1)) \times 100 + 25 \]

Where \( n \) is the number without the last digit (5).

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