69.....what kind of question is that?
65 + 65 + 65 + 65 + 65 + 65 + 65 + 65 + 65 + 65 + 65 + 65 = 65 x 12 = 780
The sum is: 66+455+4 = 525
It is: 60-4+9 = 65
7 + 5 + 4 + 5 + 3 + 4 + 6 + 5 + 4 + 5 + 6 + 4 + 7 = 65
1+2+3+... +65 = 65*66/2 = 65*33 = 2145 For the required sum, each term is simply double the corresponding term above, so 2+4+6+... + 130 = 2*2145 = 4290
65+65=130
245
1312
98 plus 65 equals 163.
65 + 65 + 65 + 90 + 90 + 90 + 90 + 50 + 50 + 50 + 50 + 50 + 50 + 20 + 20 + 20 + 20 + 20 + 20 + 20 = 995
65
65/65=1+65=66