In the following question a series is given with one term missing.Choose the correct alternative from the given onces that will complete the series:- निम्नलिखित प्रश्न में एक श्रंखला दी गयी है जिसमें एक तत्त्व लुप्त है|विकल्पों में से चुनकर श्रंखला को पूरा करे:- 12,12,18 ,45 , ?

The pattern follows: multiply by increasing fractions and then add 1. Specifically: 12 × 1/2 + 1 = 7 (not 12), but looking at the actual sequence: 12 to 12 (×1), 12 to 18 (×1.5), 18 to 45 (×2.5), 45 to 180 (×4). The multipliers increase by 0.5, then 1.0, then 1.5. Therefore: 45 × 4 = 180. Options 124, 140, and 135 don't fit this pattern.