The letters of the word ‘INDIA’ are arranged as in a dictionary. What are the 1st, 13th, 49th and 60th words?
Alphabetical arrangement of letters: A,D,I,N
1st word: ADIIN
To find other words:
Case 1: words starting with A
Number of words =
13th word starts with D and is DAIIN
Case 2: words starting with D
Number of words =
Case 3: Words starting with I
Number of words =
(12+12+24+1)th = 49th word starts with N and is NAIID
Case 4: Words starting with N
Number of words =
(48+12)th word is the last word which starts with N
60th word = NDIIA
1st word: ADIIN
13th word: DAIIN
49th word: NAIID
60th word: NDIIA