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What is the difference between witchcraft and sorcery?
\(a _ { k + 1 }\)
An element in a sequence, described as the next term (k+1) following the kth term.
\(a _ { 5 }\)
Typically denotes the fifth term in a sequence or series, depending on the context of its use.
\(\left( - \frac { 1 } { 5 } \right) ^ { n }\)
This represents a mathematical expression indicating the nth power of \(-\frac{1}{5}\).
Arithmetic
A branch of mathematics dealing with numbers and basic operations such as addition, subtraction, multiplication, and division.
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