The prime factors of 35 are 7 and 5.

7+5=12

Good Luck with the rest of this math and hope this helps you understand better!

To answer your second question…I don’t know how to explain it but the answer is yes…

7=1+3+3 (all prime)

9=3+3+3 (all prime)

11=5+5+1 (…)

13=7+3+3

15=5+5+5

17+5+5+7

19=7+7+5

21=7+7+7

23=13+5+5

25=19+3+3

27=23+3+1 and

29=23+3+3

There must be some rule involved with odd numbers and prime numbers. I hope I was of some assistance.

These r all the composite #’s on the list w/ factors. Prime factors have asterisks.

30 (1*, 2* 3*, 5*, 6, 15, 30)

32 (1*, 2*, 4, 8, 16, 30)

33 (1*, 3*, 11*, 33)

34 (1*, 2*, 17*, 34)

35 (1*, 5*, 7*, 35)

36 (1*, 2*, 3*, 4, 6, 9, 12, 18, 36)

38 (1*, 2*, 19*, 38)

39 (1*, 3*, 13*, 39)

40 (1*, 2*, 4, 5*, 8, 10, 20, 40)

30 : (1 + 2 + 3 + 5 = 11)

32 : (1 + 2 = 3)

33 : (1 + 3 + 11 = 15)

34 : (1+ 2 + 17 = 20)

35 : (1 + 5 + 7 = 13)

36 : (1 + 2 + 3 = 6)

38 : (1 + 2 + 19 = 22)

39 : (1 + 3 + 13 = 17)

40 : (1 + 2 + 5 = 9)

Hmm. U’no what? I remember in one math class that, like the Three Dog Night hit, “one is da lonliest #.” So if u were 2 disregard 1 in, um, all that stuff above, the number would be thirty-five. As 4 the additional details question, I think OUCH! got that stuff down patt.