In the sequence of tiles shown below, the missing tile indicated by the question mark should be

To solve the problem, we need to identify the pattern in the sequence of tiles shown in the images. Let's analyze the sequence step by step:
Continuing the sequence from the last part:
The sequence is forming a natural progression, where each next tile has one additional dot than the previous one. Considering this, the missing tile should naturally contain 3 dots.
The correct image based on this logic, where the missing tile should have 3 dots, matches the option provided as the correct answer:

Three different views of a dice are shown in the figure below.

The piece of paper that can be folded to make this dice is
An opaque cylinder (shown below) is suspended in the path of a parallel beam of light, such that its shadow is cast on a screen oriented perpendicular to the direction of the light beam. The cylinder can be reoriented in any direction within the light beam. Under these conditions, which one of the shadows P, Q, R, and S is NOT possible?
Five cubes of identical size and another smaller cube are assembled as shown in Figure A. If viewed from direction X, the planar image of the assembly appears as Figure B. 
If viewed from direction Y, the planar image of the assembly (Figure A) will appear as
A palindrome is a word that reads the same forwards and backwards. In a game of words, a player has the following two plates painted with letters.

From the additional plates given in the options, which one of the combinations of additional plates would allow the player to construct a five-letter palindrome. The player should use all the five plates exactly once. The plates can be rotated in their plane.