Half off each time, alternating positive and negative, the next number would be 6.25
the next number in the sequence 1 5 25 125 is 625
100 + 25 = 125
25/20 x 100 = 125 Therefore, 25 is 125 percent of 20.
5^n
There are actually more than a pattern rule for that type of sequence. The pattern rule is not obvious. The sequence is actually this: an = 5a(n - 2) for n > 2, such that the seed values are a1 = 1 and a2 = 5. Another pattern rule is the number of palindromes using a maximum of five different symbols. The third one is the Inverse Binomial Mean transformation of the Fibonacci sequence.
.5,.25,.125
the next number in the sequence 1 5 25 125 is 625
25% of 125= 25% * 125= 0.25 * 125= 31.25
25 times 5 is 125. 25 + 25 (2x25) = 50 50 + 50 (4x25) = 100 100 + 25 (5x25) = 125
100 + 25 = 125
percentage = 500%% rate:= 125/25 * 100%= 5 * 100%= 500%
It is: 25/125 times 100 = 20%
It is 25 that is the GCF of 100 and 125
%rate = 20% = 25/125* 100% = 0.2 * 100% = 20%
125
% rate:= 125/500 * 100%= 0.25 * 100%= 25%
100 + 25 = 125