Correct Answer - Option 1 : 66 ∶ 402
Given,
34 ∶ 210
Here we have (34 + 1) × 6 = 210
Similarly,
66 ∶ 402 = (66 + 1) × 6 = 402
54 ∶ 100 = (54 + 1) × 6 ≠ 100
47 ∶ 282 = (47 + 1) × 6 ≠ 282
38 ∶ 236 = (38 + 1) × 6 ≠ 236
Hence, the correct answer is 66 ∶ 402