In a row, there are 12 professors between Akash and Bhumi and Akash being the first professor in the row. There are 6 professors between Bhumi and Charu. If there are 15 professors after Charu, then how many minimum professors are there in the row?

Akash is sitting at first position (say from left end) of the row.

There are 12 professors between Akash and Bhumi, => Bhumi is sitting at 14th position.

Now, there are 15 professors after Charu, for number of professors to be minimum, Charu must sit to the left of Bhumi,

=> Charu's position = 7th from left end

$\because$ There are 15 more professors, thus minimum number of professors = 7 + 15 = 22

=> Ans - (D)