31 Because, twice 31 is 62. And, 62 plus 13 is 75.
The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1
500 + 680 + 031 ------- 1,211
31+32+33 = 96
30*31/2 = 465
31
15.25 plus 15.75 is 31
That would be 34.
31 Because, twice 31 is 62. And, 62 plus 13 is 75.
The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1
Expressed in octal, the decimal sum 27 + 31 = 58 would be expressed: 33 + 37 = 72
16 + 31 = 31 + 16This shows COMMUTATIVE PROPERTY OF ADDITION. It means that changing the order of the addends does not affect the sum.
Is the sum 31
500 + 680 + 031 ------- 1,211
31 and 32
31+32+33 = 96
31