Question 37396
IF YOU DIVIDE 100 BY ANY ODD NUMBER (3,5,7,9,11,13,15,ETC) THAT GIVES YOU A WHOLE NUMBER (IE 100/5=20) THIS TELLS YOU THAT 5 SEQUENTIAL NUMBERS WITH 20 BEING THE MIDDLE NUMBER IS A SOLUTION: THUS 18+19+20+21+22=100

OR IF YOU DIVIDE 2600 BY  900/15=60 THUS 15 CONSECUTIVE NUMBERS WITH 60 AS THE 

MIDDLE NUMBER WILL ADD UP TO 900 THUS 

53+54+55+56+57+58+59+60+61+62+63+64+65+66+67=900 

HOPE THIS HELPS. IT'S NOT VERY SIMPLE BUT IT DOES WORK.

TRY IT WITH 400/25=16 OR 25 NUMBERS WITH 16 AS THE MIDDLE NUMBER

TRY IT WITH 2200/11=200 OR 11 NUMBERS WIT 200 AS THE MIDDLE NUMBER