- 49
- 42
- 35
- 56

Option 2 : 42

**Given**:

Number × (3/7) = 21

**Calculation:**

Let the number be x.

According to the question,

⇒ x × (3/7) = 21

⇒ x = 49

Again, according to the question

⇒ (6/7) × 49

⇒ 42

**∴ The 6/7 of the number is 42.**

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