IBPS PO mains 2016 important questions on reasoning

Directions (Q. 1-5) : In these questions, relationships between different elements are shown in the statements.
these statements are followed by two conclusions.

1.  What  should come in place of question mark (?) in the expression to make R > Z and P ≤ S definitely true?
M > N < Z ? R < O > S ? P  (2)
(1) ≤, <         (2) ≥, ≥       (3) <, <      (4) >, ≥      (5) None of these

2. Which of the following expression will be true if the expression A ≥ D = L > M < R ≤ T < P = O is definitely true?         (2)
(1) L > R      (2) M < T     (3) T > O    (4) A ≥ M    (5) M ≥ P

3. Which  of the following expression will be false, if the expression X = T > N ≥ O ≤ Z = C ≥ Y > P ≤ A is definitely true?  (3)
(1) T > O   (2) C > P   (3) Y < A   (4) Z ≥ Y   (5) None of these

4. Which of the following symbol should be placed in  blank spaces respectively to make the expression D ≥ G, P < L and M > A definitely true?  N > A_M > O < R ≤ G _ D < S > L_P   (5)
(1) <, ≥, >   (2) ≤, <, >   (3) <, ≥, ≥   (4) ≥, ≥, >  (5) None of these

5. If ÷ means +, – means ×, × means ÷ and + means – then 15 – 8 × 6 ÷ 12 + 4 = ?  (2)
(1) 20 (2) 28 (3)     (4) 2   2/3   (5) None of these