Take a look at the following sequence: 80, 10, 70, 15, 60,... What should be the next number?
A. 20
B. 25
C. 30
D. 50
Answer:C
Take a look at the following sequence: 80, 10, 70, 15, 60,... What should be the next number?
A. 20 B. 25 C. 30 D. 50
Explanation: This is a series that alternates between addition and subtraction. To get to the next number, deduct 10 from each number in the first pattern. In the second, each number is multiplied by 5 to arrive at the next.