ACT MATH · Pre-Algebra & Number · Standard

Pre-Algebra & Number: A sequence starts math. What is its mathth term?

Fractions, LCM/GCD, exponents.

Try the problem

A sequence starts 5,9,13,17,…5,9,13,17,\ldots. What is its 2020th term?

Hint and answer

Concept to use

Exponent laws.

Hint

It increases by 4 each term.

Answer

81

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