1000
sum of n natural number is n(n+1)/2 first 50 number sum is 50(50+1)/2 = 1275
1275
15% of 1275= 15% * 1275= 0.15 * 1275= 191.25
A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. If it does not contain a fractional part then the decimal representation does not require a decimal point. So the decimal for 1275 is 1275 – as in the question.
The 50th triangular number is (50)(51)/2=1275
The numeral 1275 is "one thousand two hundred and seventy-five."
106.25
1280
he other number is 1275
1275
It is: 3*5*5*17 = 1275 or as 3*52*17 = 1275