I attends music class only after one person and has tuition neither in Chand nagar nor in Madipur. A attends music class on Tuesday and has tuition in Mundka. Only three girls attend music class between A and E who do not have her tuition in Kirti nagar. Only three girls attend music class between J and H but H attends music class after A. Neither J nor H attends music class on Wednesday. So, there can be two possibilities---- 
J does not attend music class in evening. From this case-2 will get eliminated. The one who attends class on Thursday has tuition centre in Kirti nagar. Both D and B attend music class on same day. Four girls attend music class between G and D. G attends music class before D and has tuition centre in Punjabi bagh. Both who has tuition centre in Nangloi and Azadpur attends music class on same day. B does not has tuition centre in Azadpur. F attends music class immediately before C who has tuition centre in Hari nagar.  
 I do not have tuition centre in Ashok nagar. The one who has tuition centre in Ashok nagar attends music class immediately before the one who has tuition centre in Chand nagar. So the final arrangement will be---- 
To find the Next number in the given series.
342 510 726 996 1326 ?
...61, 48, ?, 35, 87, 22
12 78 385 ? 4629 9260
...2120 1976 2097 1997 ? 2014
...13, 26, 104, ?, 13312, 425984
16, 8, 8, ?, 24, 60
22, 23, 31, 57, 122, 247
2 3 4 15 56 ?
...35.25 71 146 296 624 1376
...5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 14Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â...
