Direction  
					In each of the following questions, group the given figures into three classes using each figure only once. - 				
								
								
				
						
						
							21.  
 
							
								
																			
											
												
													A. 
													 1,7,9 ; 2,3,6 ; 4,5,8 
													B. 
													 1,2,9 ; 3,4,6 ; 5,7,8 
												 
												
													C. 
													 1,6,8 ; 2,4,7 ; 3,5,9 
													D. 
													 1,7,8 ; 2,9,3 ; 6,4,5 
												 
											 
										
																		 
							 
							
								
									
								 
							 
						
							
								
									
									Answer:  Option A 
									Explanation:   1, 7, 9 contain two similar elements one inside the other but not touching each other.
 2, 3, 6 contain two similar elements one inside the other and both touching each other.
 4, 5, 8 are divided into equal parts by straight lines emerging from the centre. 
  
								 
								
								
								
							 
						 
					
				 
			 
		
								
				
						
						
							22.  
 
							
								
																			
											
												
													A. 
													 1,4,7 ; 2,5,9 ; 3,8,6 
													B. 
													 2,6,9 ; 1,4,7 ; 5,8,3 
												 
												
													C. 
													 1,4,7 ; 2,3,6 ; 5,8,9 
													D. 
													 3,5,1 ; 4,7,8 ; 6,2,9 
												 
											 
										
																		 
							 
							
								
									
								 
							 
						
							
								
									
									Answer:  Option C 
									Explanation:   5, 8, 9 are objects having both base as well as upper lid.
 2, 3, 6 are objects having base but not upper lid.
 1, 4, 7 tare objects which have neither a base nor an upper lid attached to them. 
  
								 
								
								
								
							 
						 
					
				 
			 
		
								
				
						
						
							23.  
 
							
								
																			
											
												
													A. 
													 1,5,8 ; 2,6,7 ; 3,4,9 
													B. 
													 1,5,7 ; 2,6,8 ; 3,4,5 
												 
												
													C. 
													 1,5,8 ; 2,4,7 ; 3,6,9 
													D. 
													 1,5,8 ; 2,6,9 ; 3,4,7 
												 
											 
										
																		 
							 
							
								
									
								 
							 
						
							
								
									
									Answer:  Option C 
									Explanation:   3, 6, 9 are geometrical figures containing line segments (the number of these line segments is half the number of sides in the figure) parallel to the sides of the figure.
 1, 5, 8 consist of a circle and a triangle intersecting it. The triangle is also divided into two equal parts by a straight line.
 2, 4, 7 are all funnel shaped figures.