Respuesta :

ChoiSungHyun

Step-by-step explanation:

We have to find the sum of 102 + 105 + 108 + ... + 996 + 999.

Notice that 102 = 3 * 34 and 999 = 3 * 333. Hence there are 333 - 34 + 1 = 300 terms.

Hence the sum is 300(102 + 999)/2 = 1101 * 150 = 165,150.