By this Formula (a+1)^2 - a^2 = 2a + 1 = (a+1) + a

so 100^2-99^2 = 100+ 99 98^2 - 97 ^2 = 98+97 96^2-95^2 = 96 + 95

so on adding we get 100^2-99^2+98^2-97^2+...+2^2-1^2 =100 + 99 + 98 ... + 1 = sum of integers from 1 to 100 = 100 *101/2 = 5050

Which set of numbers would most logically fill in the blanks in the following series? 101, 99, 102, 98, 103, 97, _ , _ ,105, 95, 104, 94 (a) 101 98 (b) 104 96 (c) 106 99 (d) none of these

Please provide your reasoning also?

(a) 49 (b) 48 (c) 99 (d) 1

Find the mode of following list of values : 86 69 77 68 85 97 85 68 96 83 69 68

If 5-4= 96 1+3= 6 5-3= 114 then 5+2= ??