Statements
st 1:Some Rats can fly
St 2:All bats can fly
Conclusion
Con 1:Some bats are rats
Con 2No Bats is rats Please Expain me without Venn Diagrams

From the two given statements we only know that some rats can fly and some bats can fly but it cannot be concluded that if some bats are rats or not.
But since the given conclusions are complementary to each other one of them has to be true and the other will automatically be false.
Hence the answer to this question is that only one of the conclusions is true.