Which of the following numbers will have `6` at their unit's place :
(i) `26^(2)`
(ii) `49^(2)`
(iii) `34^(2)`
(iv) `43^(2)`
(v) `244^(2)`

Answer

To determine which of the given numbers will have `6` at their unit's place when squared, we can analyze each number step by step.

### Step-by-Step Solution:

1. **Calculate \(26^2\)**:
- The unit's place of `26` is `6`.
- Now, calculate \(6^2\):
\[ 6^2 = 36 \]
- The unit's place of \(36\) is `6`.

2. **Calculate \(49^2\)**:
- The unit's place of `49` is `9`.
- Now, calculate \(9^2\):
\[ 9^2 = 81 \]
- The unit's place of \(81\) is `1`.

3. **Calculate \(34^2\)**:
- The unit's place of `34` is `4`.
- Now, calculate \(4^2\):
\[ 4^2 = 16 \]
- The unit's place of \(16\) is `6`.

4. **Calculate \(43^2\)**:
- The unit's place of `43` is `3`.
- Now, calculate \(3^2\):
\[ 3^2 = 9 \]
- The unit's place of \(9\) is `9`.

5. **Calculate \(244^2\)**:
- The unit's place of `244` is `4`.
- Now, calculate \(4^2\):
\[ 4^2 = 16 \]
- The unit's place of \(16\) is `6`.

### Summary of Results:
- \(26^2\) has `6` at the unit's place.
- \(49^2\) has `1` at the unit's place.
- \(34^2\) has `6` at the unit's place.
- \(43^2\) has `9` at the unit's place.
- \(244^2\) has `6` at the unit's place.

### Conclusion:
The numbers that will have `6` at their unit's place when squared are:
- \(26^2\)
- \(34^2\)
- \(244^2\)