Double it every time and so the next number will be 80
80
20, 15, 10, 5, 0, -5, -10, -15, -20 and so on.
The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40
1*40 4*10 5*8 2*20
The rest of the sequence would be as follows: 40, 20, 10, 5... because each successive number is half of the prior.
The next number in the sequence 5, 10, 20, 40 is 80. Each number in the sequence is multiplied by 2 to get the next number. So, 40 multiplied by 2 equals 80.
40 5 10 20 40 80 160.......double the number each time.
80
If you mean: 5 10 20 40 then it is 80
1 x 5 = 5 5 x 10 = 50 ; 10 is 5+5 50 x 20 = 1000; 20 is 10+10 1000 x 40 = 40,000 ; 40 is 20 + 20 40,000 x 80 = 3,200,000; 80 is 40+40 therefore the next 2 numbers are 40,000 and 3,200,000
If you mean: 5, 10, 20, 40 then the following number is twice the previous number which will be 80
1, 10, 2, 20, 3, 30, 4, 40, 5, 50, and so on.
20, 15, 10, 5, 0, -5, -10, -15, -20 and so on.
These may help you answer your questions: 1, 2, 4, 5, 8, 10, 20 and 40.
1, 2, 4, 5, 8, 10, 20, 40 , -1, -2, -4, -5, -8, -10, -20, -40
20,40,60 Proof (20)(20/4=5)(20/5=4)(20/10=2) And (40)(40/4=10)(40/5=8)(40/10=4) And (60)(60/4=15)(60/5=12)(60/10=6)
40/10 = 20/a 4= 20/a 20/4 = a a= 5