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GATE | GATE-CS-2004 | Question 75

Mala has a colouring book in which each English letter is drawn two times. She wants to paint each of these 52 prints with one of k colours, such that the colour-pairs used to colour any two letters are different. Both prints of a letter can also be coloured with the same colour. What is the minimum value of k that satisfies this requirement ?
 

(A)

9
 

(B)

8
 

(C)

7
 

(D)

6
 

Answer

Please comment below if you find anything wrong in the above post
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