You should use your calculator for such simple sums. It is far quicker and involves fewer key depressions than posting the question on WA. But since you seem unable to carry out even this simple task, the answer is 7.6
10
They are: 33+34 = 67
33
Switch the two numbers round then take away the smaller number from the bigger one: 67-76 76- 67= 09 09-90 90- 09= 81 etc
28 and 39.
49, 67, 85
The sum of 67 and 78 is 145.
the sum of 67 + 13 = 80
A Partial Sum is a Sum of Part of a Sequence. You must have a sequence to find the partial sum. The regular sum of 67 + 85 is 152.
It is: 5+67 = 72
67 + 89 = 156
67 + 5 = 72
They are: 33+34 = 67
67
No primes can be found such that they can sum to 67.
54 + 67 = 121 54 x 67 = 3618
81
33