#1
What is the next number in the sequence: 2, 4, 6, 8, ...?
12
ExplanationAdding 2 to each previous number
#2
What is the missing number in the sequence: 5, 10, 15, __, 25?
21
ExplanationAdding 5 to each previous number
#3
What is the next term in the sequence: 1, 4, 9, 16, ...?
25
ExplanationSquaring natural numbers
#4
What is the missing number in the sequence: 2, 6, 12, __, 30?
24
ExplanationMultiplying by consecutive even numbers
#5
What is the pattern in the following sequence: 1, 4, 9, 16, 25, ...?
Square of natural numbers
ExplanationEach number is the square of its position in the sequence
#6
What comes next in the sequence: 3, 8, 15, 24, ...?
35
ExplanationIncreasing by consecutive odd numbers
#7
What is the next number in the sequence: 1, 4, 9, 16, 25, ...?
49
ExplanationEach number is the square of its position in the sequence
#8
What is the next term in the sequence: 3, 6, 12, 24, ...?
48
ExplanationMultiplying by 2 each time
#9
What is the next number in the sequence: 1, 1, 2, 3, 5, 8, ...?
13
ExplanationEach number is the sum of the two preceding ones (Fibonacci sequence)
#10
Which of the following sequences is arithmetic?
1, 3, 6, 10, 15
ExplanationAdding increasing numbers each time
#11
What is the pattern in the following sequence: 2, 3, 5, 7, 11, ...?
Adding prime numbers
ExplanationEach number is the sum of consecutive prime numbers
#12
What is the pattern in the following sequence: 1, 3, 7, 15, 31, ...?
Doubling the previous term and adding 1
ExplanationEach term is doubled and 1 is added