Doubt in Mahabharat:

In some remote village of India, one masterji is teaching the
Mahabharat katha to class 6 students.
He is at the 'krishnajanma' part of it.
Masterji: "Kansa heard the akashwani that his sister's 8th child is
going to kill him. He was furious. He ordered to put vasudev n devki
behind the bars. First son is born, andkansa kills him by poisoning...
Second one is born n kansa throws him off the mountain peak. Third
one is born...
" Now Ramu, who is smartest of the lot, puts up his hand. Masterji, I
have a doubt (sounding nervous n confused)
Masterji: "Ramu bete, whole india does not have doubt in mahabharata
then how come u have one?"
Ramu : Masterji, if Kansa knew that Devaki's 8th child was going to
Kill him,
WHY THE HELL DID HE PUT VASUDEV AND DEVAKI IN THE SAME CELL?

Masterji fainted..... ......... ......... ..