What sequence of 5 positive integers has these three properties: 1) All but one of the numbers is a multiple of 5.2) Every number after the first is 1 more than the sum of all the preceding numbers. 3) The first number is as small as possible?
A.
\(10,11,22,44,88\)
B.
\(1,2,4,8,16\)
C.
\(5,6,12,24,48\)
D.
\(4,5,10,20,40\)
Exam No：2018 First Round Grades 10-12 Year：2018 Question No：10
Answer:
D
Knowledge points:
G10-12 - Algebra - Sequences & Series (Arithmetic, Geometric, Recursive)
Solution:
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