Write down the reciprocal of
(i)`3/7`
(ii)`1/5`
(iii)6
(iv)`3 5/8`

Answer

To find the reciprocal of a number or a fraction, we simply flip the numerator and the denominator. Let's solve the given question step by step.

### Step-by-Step Solution:

**(i) Find the reciprocal of `3/7`:**
1. The fraction is `3/7`.
2. To find the reciprocal, we switch the numerator and the denominator.
3. Therefore, the reciprocal of `3/7` is `7/3`.

**(ii) Find the reciprocal of `1/5`:**
1. The fraction is `1/5`.
2. To find the reciprocal, we switch the numerator and the denominator.
3. Therefore, the reciprocal of `1/5` is `5/1`, which can also be written as `5`.

**(iii) Find the reciprocal of `6`:**
1. The number `6` can be expressed as a fraction: `6/1`.
2. To find the reciprocal, we switch the numerator and the denominator.
3. Therefore, the reciprocal of `6` is `1/6`.

**(iv) Find the reciprocal of `3 5/8`:**
1. First, convert the mixed number `3 5/8` into an improper fraction.
- Multiply the whole number `3` by the denominator `8`: `3 * 8 = 24`.
- Add the numerator `5`: `24 + 5 = 29`.
- So, `3 5/8` becomes `29/8`.
2. To find the reciprocal, we switch the numerator and the denominator.
3. Therefore, the reciprocal of `29/8` is `8/29`.

### Final Answers:
1. Reciprocal of `3/7` is `7/3`.
2. Reciprocal of `1/5` is `5`.
3. Reciprocal of `6` is `1/6`.
4. Reciprocal of `3 5/8` is `8/29`.