Level:
Project ID:
1003158502
Accepted:
1
Clonable:
0
Easy:
0
Let there be two unknown positive numbers between numbers \( 12 \) and \( 54 \). The first three numbers of these four form \( 3 \) consecutive arithmetic sequence terms, and the last \( 3 \) numbers form three consecutive terms of a geometric sequence. Find the smaller of the two unknown numbers.
\( 24 \)
\( 36 \)
\( 15 \)
\( 20 \)
\( 32 \)