The average of the numbers 1, 2, 3,................. 98, 99 and 'x' is 100x. Find the value of x? Share with your friends Share 1 Manbar Singh answered this We have, average of 1, 2, 3, ......., 99, x = 100x⇒1 + 2 + 3 + .......+99 + x100 = 100x⇒4950 + x = 10000x as, Sn = nn+12, where n is the natural numbers, S99 =4950⇒9999x = 4950⇒x = 49509999 = 50101 1 View Full Answer Devasurya answered this WHY DOVE NEED PARLIMENT -2