# Squaring special numbers (9’s and final 1)

### Follow the following Steps:

1. Choose a number with repeating 9’s and a final 1.
2. The square is made up of:
• one fewer 9 than there are repeating 9’s
• 82
• the same number of 0’s as there are 9’s in the square
• A final 81

#### Example-1:

1. If the number to be squared is 9991:
2. The square has:`One fewer 9 than the   repeating 9's:        9 982                           8 2same number of 0's as 9's   in the square                 0 0a final 81                            8 1`
3. `So 9991 Ă— 9991 = 99820081.`

#### Example-2:

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1. If the number to be squared is 999991:
2. The square has:`one fewer 9 than the   repeating 9's:       9 9 9 982                              8 2same number of 0's as 9's   in the square                    0 0 0 0a final 81                                  8 1`
3. So 999991 Ă— 999991 = 999982000081