Identify the correct positive form of the sentence: Mango is the tastiest fruit.

• Superlative degree কে positive degree তে এ রূপান্তর করার নিয়ম: 

1) No other +
2) Superlative degree এর পরের অংশ + 
3) Verb +
4) So +
5) Superlative degree এর Positive form +
6) as +
7) প্রদত্ত Sentence এর Subject.  

Superlative degree: Mango is the tastiest fruit.
Positive degree: No other fruit is as tasty as Mango.

Source: Advanced Learner's English Grammar & Composition by Chowdhury & Hossain.