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Question: The reflection of the letter A in a mirror is also A . How many three-lettered combinations of such similar reflections of letters is possible? A ) 1331 B ) 2600 C ) 2100 D ) 1247 Steps to derive 1 Alphabets having the reflections same as that of itself are (A , H , I , M , O , T , U , V , W , X , Y ), which are 11 in number.2 Number of choices for each letter in a three-lettered word = 113 By counting principle, 1st letter 2nd letter 3rd letter 11 x 11 x 11 = 13314 There are 1331 three-lettered combinations of letters possible.Hence the right answer is Option A Click Here To Go Back Few Other Questions - Choose the coordinates of the point P (7, 0) in original system, when the original system .. Choose the coordinates of the point P (0, 10) in the original system, when the original sy.. Choose the conic, which is represented by the equation x2 - xy + y2 = 2 when it is rotated.. The transformed equation of a conic after the axis are rotated through some angle is given.. 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