Questions

Uracil is not found in DNA but found in RNA.

If we read the question clearly twice, we can understand that the name of the horse on which the cowboy rides into town is FRIDAY.

Arther Conon Dole is the author of Adventures of Sheerlock holmes.This book is related to the murder mysteries that are solved by Sherlock holmes

394  is the code to unlock the key.

If you take the second statement, 7 is incorrect from the first statement and 1 is incorrect from the fourth statement. Hence 4 is correct, but not on the second place. From the third statement, 4 is not on the first place. Hence 4 is on the third place.

From the fifth statement either 6 or 9 is correct. But combining it with the third statement, 6 is incorrect. Hence along with the first statement, 9 is correct and on the second place.

From the third statement, 3 is correct and on the remaining first place.

Nickel