SAT Math Multiple Choice Question 103: Answer and Explanation

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Test Information

Question: 103

13. If (i413)(ix) = 1, then what is one possible value of x ?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Correct Answer: D

Explanation:

Dia = 1 when a is a multiple of 4. Using your exponents rules, 413 + x must also be a multiple of 4. Plug in the answers and look for what makes 413 + x a multiple of 4. Only (D) works.

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