Understanding Number Patterns

What is the rule for generating the sequence 1, 3, 7, 15, 31?

• Multiply by 3 and add 2

• Multiply by 2 and add 1

• Subtract 1 from the previous number

• Add 5 to the previous number

What is the next number in the sequence 1, 3, 7, 15, 31?

• 63

• 64

• 62

• 65

What is the rule for the sequence 80, 71, 62, 53, 44?

• Subtract 10 from the previous number

• Subtract 9 from the previous number

• Add 9 to the previous number

• Multiply by 2 and subtract 1

If the pattern is 80, 71, 62, 53, 44, what would be the next number?

• 38

• 36

• 37

• 35

Which of the following sequences follows the rule of subtracting 9 from the previous number?

• 100, 91, 82, 73

• 90, 81, 72, 63

• 85, 76, 67, 58

• 95, 86, 77, 68