In a certain code language, '254' means 'You are intelligent', '153' means 'Nikhil is intelligent', '398' means 'Naina and Nikhil', then what is the code for 'is' in the same code language?

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In 1st and 2nd five is common hence intelligent is common for 5
In 2nd and 3rd nikhil is common so 3 is code of nikhil
Hence the answer is :

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