Question

BLIND BATS AT HALLOWEEN
There were number of bats in a cave.
Two bats can see out of right eye,
Three bats can see out of left eye, Four can't see out of left eye, and
Five can't see out of right eye.
What is the least number of bats in the cave & what might their eyesight have been?
(Totally Blind- Blind Right Eye-etc.

Answer 1

Only seven bats are described (4 + 3) and (5 + 2) for the condition of each eye.

Assuming that no bats can see out of both eyes, let's designate right eye see as RS, and not see as RN, doing similar notation with the left eye.

RS LN
RS LN
RN LS
RN LS
RN LS
RN LN
RN LN

Translate that into your answers.

Answer 2

7 bats