The greatest number that is less than 30 is 29.Becuase the only prime numbers that are less then 100 are:2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,59,61,67,71,73,79,83,89 and 97.So as you seen the greatest number that is less than 30 is 29.
29
28
29
The multiples of 4 that are less than 30 are 4, 8, 12, 16, 20, 24, 28. So the greatest multiple of 4 that is less than 30 is 28.
Prime number greater than 25 but less than 30 is 29.
215 - 30 = 185. So, 185 is 30 less than 215.
2,3,5,7,11,13,17,19,23,and 29
3 and 9.
The GCF of 18 and 30 is 6
Prime number which is greater than 30 and less than 35 is 31.
It is: 65756 and 6+5+7+5+6 =29