The book on which of the following subjects is kept on the top?
Data inadequate
C's book is at the top, and we are told that the book on subject R is immediately above the book on subject T. Based on the positioning of books and persons, it follows that the book on subject R must be kept at the top. This is the only arrangement that satisfies the conditions for the books.
Thus, the correct answer is (b) R.
Five friends A, B, C, D, and E are sitting in a row facing north, but not necessarily in the same order:
B is to the immediate left of C
E is not at any of the ends
D is to the right of E but not next to C
A is at one of the ends
Who is sitting in the middle?
Find the missing code:
L1#1O2~2, J2#2Q3~3, _______, F4#4U5~5, D5#5W6~6
Find the missing number in the table.