A) u
B) v
C) w
D) x
Correct Answer: D
Solution :
| a, bb, c,c,c, d,d,d,d, ?. Consider the arrangement of n letters. |
| Then, \[1+2+3+...+n=\frac{n(n+1)}{2}\le 288\] |
| i.e., \[{{n}^{2}}+n-576\le 0\] \[\therefore \,\,\,\,\,\,\,\,\,n\le 23\] |
| \[\therefore \]if we write up to 23 letters i.e., upto w, the total number of terms |
| \[=1+2+3+...+23=\frac{23\times 24}{2}=276\] |
| \[\therefore \]terms from 276 to 300 are the letter x each |
| \[\therefore \] 288th letter is x. |
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