Answer:
I haven't the slightest idea
`Have you guessed the riddle yet?' the Hatter said, turning to Alice again.
`No, I give it up,' Alice replied: `what's the answer?'
`I haven't the slightest idea,' said the Hatter.
`Nor I,' said the March Hare.
Alice sighed wearily. `I think you might do something better with the time,' she said, `than waste it in asking riddles that have no answers.'