26
Un = 26x + 42
31 is the only prime number between 30 and 40
52, and 68
42 + 26n, 42 + 26(n+1), 42 + 26(n+2), etc.You add twenty-six each time, starting with forty-two.
42 ÷ 100 × 68 = 28.56
The GCF is 4.
The GCF of 42 and 68 is 2
The GCF is 2.
68/120 = 34/60 = 17/30
The median of those numbers is 43. To find the median of a set of numbers: Reorder the numbers so they are least to greatest: 28, 31, 32, 35, 42, 44, 48, 65, 68, 85. Cross off the leftmost number and the rightmost number. Continue doing this until you are left with either 1 or 2 numbers. 28, 31, 32, 35, 42, 44, 48, 65, 68, 85. 31, 32, 35, 42, 44, 48, 65, 68. 32, 35, 42, 44, 48, 65. 35, 42, 44, 48. 42, 44. If you are left with just 1 number, then that number is the median. Here, we are left with 2 numbers, so we have to average them. So add the numbers together and divide by 2. 42 + 44 = 86. 86 / 2 = 43. 43 is the median.
The numbers 71, 73 and 79 are prime.
.65, .68, .72; any decimal between these two numbers