The mermaid begged them to let her go. Each of them wanted a boon. She agreed to it.
The first sardarji asked to double his 'IQ'. So the mermaid granted his wish.
The second sardarji asked to triple his 'IQ'. His was granted too.
And the third sardarji asked to quintuple his 'IQ'. The mermaid warned him about the consequences that his image might be changed.
But he insisted. At once the mermaid granted his wish and he changed into a sardarni!