16, 33, 65, 131, and 261 are all numbers that may be used to make a number of different combinations (....)
A. 523
B. 521
C. 613
D. 721
Answer:A
16, 33, 65, 131, and 261 are all numbers that may be used to make a number of different combinations (....)
A. 523 B. 521 C. 613 D. 721
Explanation: Each number is double the previous one, with 1 either added or removed.2 x 261 + 1 = 523 is the following number.