Maths-
General
Easy

Question

The number of rectangles in the adjoining figure is –

  1. 5 × 5    
  2. 5P2 × 5P2    
  3. 5C2 × 5C2    
  4. None of these    

The correct answer is: 5C2 × 5C2


    T h e space n u m b e r space o f space r e c tan g l e s space i n space a space l a r g e r space r e c tan g l e space i s space g i v e n space b y
scriptbase C subscript 2 cross times end scriptbase presuperscript m scriptbase C subscript 2 space w h e r e space m space a n d space n space a r e space t h e space t w o space s i d e s space o f space t h e space l a r g e r space r e c tan g l e space a n d space i t space w i l l space h a v e space open parentheses m plus 1 close parentheses space a n d space open parentheses n plus 1 close parentheses space g r i d s. end scriptbase presuperscript n
    therefore I n space t h e space a d j o i n g space f i g u r e comma
T h e space n u m b e r space o f space r e c tan g l e s space a r e space C presuperscript 5 subscript 2 cross times C presuperscript 5 subscript 2

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