36
18
If you are including 10 and 30 there are 11 even numbers. If you are not counting 10 and 30 there are 9 even numbers between 10 and 30.
The difference between two numbers is the second number subtracted from the first number.For example:The difference between 15 and 6 is 915-6=9
3, 9, 15, 21, 27
90
11,13
11+13 is 24. If you believe 9, 15 are between 9 and 15 (I don't) it would be 48
36
If you are including 10 and 30 there are 11 even numbers. If you are not counting 10 and 30 there are 9 even numbers between 10 and 30.
The two numbers must be 6 and 9, as 6 + 9 = 15 and theer is a difference of 3 between 6 and 9. The product of 6 and 9 = 54.
15
9
Must be the 2 odd numbers, 9 & 15 (P = 135, S = 24)
There are 7 composite numbers between 5 to 15 they are- 6,8,9,10,12,14,15
18
92