725
225
346. It is so very simple when you sue a calculator.
The sum of the first 15 positive even numbers is 240. (Simply square 15, then add 15 to the result: 15 x 15 = 225. 225 + 15 = 240).
If they can be same 15*15 =225 if they have to be distinct 13*17 =221
Formula for sum of first natural number = n(n+1)/2 , here n=225 so, answer is 225(225+1)/2 = 25425
225
what is 36+225
725
The square root of 100 = 10 The square root of 225 = 15 The sum = 10 + 15 = 25
403
225
The sum of the first 15 odd numbers is 225.
112 and 113
205 + 10 + 10
150
346. It is so very simple when you sue a calculator.