12
22
It is the smaller divided by the bigger. For 5 and 17, the 5 is 5/17 of the 17.
Without trying hard or straining our brain, we can see something here immediately: -- 17/12 is more than ' 1 ', because the numerator is bigger than the denominator. -- 3/5 is less than ' 1 ', because the numerator is smaller than the denominator. So 17/12 must be bigger than 3/5 .
8
no 17 is smaller than 19
.16 is smaller than .5
YEs it is... When a number has a minus than the bigger number is smaller.
No. 4 is smaller than 17 so it cannot be divisible by 17.
17
-15
Yes. -3 is smaller than +5. Any negative number is smaller than any positive number.
85 (=17*5). The middle term is 5. There are 8 terms bigger than 5 and 8 smaller. The term smaller than 5 and next to it is 5 - r The term bigger than 5 and next to it is 5 + r So these two average 5. Similarly, the next pair outwards average 5; and so on. So the sum of the progression is equivalent to the sum of 8 pairs of numbers whose average is 5 and the middle term which is 5 ie 17 lots of 5.