Complete the series: 2, 4, 8, 16, ?
a) 20
b) 24
c) 32
d) 64
c) 32
Explanation: This is a geometric progression where each number is multiplied by 2. So, 16 × 2 = 32.
Find the missing number: 3, 6, 9, 12, ?, 18
a) 14
b) 15
c) 16
d) 17
b) 15
Explanation: This is an arithmetic sequence with a common difference of 3. So, 12 + 3 = 15.
What comes next: 1, 4, 9, 16, 25, ?
a) 30
b) 35
c) 36
d) 49
c) 36
Explanation: This is a sequence of perfect squares: 1², 2², 3², 4², 5², so next is 6² = 36.
Complete the series: 5, 10, 20, 40, ?
a) 60
b) 70
c) 80
d) 100
c) 80
Explanation: Each number is multiplied by 2. So, 40 × 2 = 80.
Find the next number: 1, 1, 2, 3, 5, 8, ?
a) 11
b) 12
c) 13
d) 15
c) 13
Explanation: This is a Fibonacci sequence where each number is the sum of the two preceding numbers. So, 5 + 8 = 13.
What is the missing number: 100, 95, 90, ?, 80
a) 82
b) 85
c) 87
d) 88
b) 85
Explanation: This is an arithmetic sequence decreasing by 5. So, 90 - 5 = 85.
Complete the series: 2, 6, 12, 20, 30, ?
a) 40
b) 42
c) 44
d) 48
b) 42
Explanation: The pattern is n×(n+1): 1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30, so next is 6×7=42.
Find the next term: 1, 8, 27, 64, ?
a) 100
b) 125
c) 144
d) 216
b) 125
Explanation: This is a sequence of perfect cubes: 1³, 2³, 3³, 4³, so next is 5³ = 125.
What comes next: 7, 14, 28, 56, ?
a) 84
b) 96
c) 112
d) 128
c) 112
Explanation: Each number is multiplied by 2. So, 56 × 2 = 112.
Complete the series: 11, 13, 17, 19, 23, ?
a) 25
b) 27
c) 29
d) 31
c) 29
Explanation: This is a sequence of prime numbers. The next prime after 23 is 29.