353, each time you double the number then take 1 away.
The 178th multiple of 45 = 8010 is the closest multiple of 45 to 8000. 8000 ÷ 45 = 177 remainder 35. Half of 45 is 221/2. 35 is greater than 221/2, that is it is more than half of 45, so the next higher multiple, ie 178 x 45, will be closer to 8000 than 177 x 45. 178 x 45 = 8010.
45
425
31
31
45
31.
The next two numbers in the sequence are... 45 & 54.
45*177=7965 45*178=8010 8010 is closest to 8000.
5 nice question!!
45
The GCF is 3.