Level:
Project ID:
1003057904
Accepted:
1
Clonable:
0
Easy:
0
The \( 2 \)nd term of an arithmetic sequence is \( 3 \) and the \( 14 \)th term is \( 51 \). Choose the incorrect formula:
\( a_{20}=a_2+(51-3)\cdot18 \)
\( a_{20}=75 \)
\( a_{20}=a_{14}+6\cdot4 \)
\( a_{20}=a_2+18\cdot4 \)
\( a_{20}=3+\frac{18}{12} (a_{14}-a_2 ) \)