# Number Puzzles Test Questions and Answers  1.

What number replaces the question mark? A.) 10
B.) 9
C.) 11
D.) 13

Numbers follow the sequence of Prime Numbers.
2 + 6 + 8 + 10 + 3 = 29
3 + 8 + 10 + 2 = 23
4 + 10 + 5 = 19
5 + 12 = 17
Then after prime number is 13. Ans : 13 2.

What number replaces the question mark? A.) 102
B.) 121
C.) 120
D.) None of these

As you move diagonally down,
2 × 2 + 1 = 5
5 × 2 + 2 = 12
12 × 2 + 3 = 27
27 × 2 + 4 = 58
58 × 2 + 5 = 121, Then ans = 121. 3.

What number replaces the question mark? A.) 11
B.) 9
C.) 7
D.) 8

The number at the centre of each triangle equals the sum of the lower two numbers minus the top number.
5 + 8 = 13 - 7 = 6
9 + 3 = 12 - 8 = 4
7 + 6 = 13 - 5 = 8. Answer = 8 4.

What number replaces the question mark? A.) 4
B.) 3
C.) 2
D.) 1

The numbers in each colum of the diagram add up to 13.
7 + 1 + 3 + ? = 13
2 + 6 + 4 + 1 = 13
1 + 2 + 4 + 1 = 13
1 + 2 + 5 + 5 = 13
3 + 4 + 2 + 4 = 13 5.

What number replaces the question mark? A.) 12
B.) 11
C.) 13
D.) 7

Numbers follow the alternate of Prime Numbers.
3 + 7 + 9 + 12 + 10 = 41
4 + 6 + 10 + 9 = 31
7 + 9 + 7 = 23
5 + 12 = 17
So next prime number is 11. 6.

What number replaces the question mark? A.) 45
B.) 55
C.) 65
D.) 70

The sum of top number and bottum of left number is equal to the bottum of right number.
1. 27 + 14 = 41
2. 36 + 18 = 54
3. 45 + 20 = 65, Then Answer : 65 7.

What number replaces the question mark? A.) 14
B.) 12
C.) 15
D.) 16

7 × 4 = 28
9 × 4 = 36
3 × 4 = 12, Then answer = 12 8.

What number replaces the question mark? A.) 3
B.) 3.848
C.) 3.464
D.) 4.32

82 = 64 ,  8 = 2.828
122 = 144,  12 = 3.464 9.

What number replaces the question mark? A.) 1804
B.) 1716
C.) 1816
D.) 1849

10.

What number replaces the question mark? A.) 60
B.) 61
C.) 62
D.) 63

As you work down the column, Numbers follow the sequence of square numbers from 16 to 81, Subtracting 3, then 6, then 9, etc....
42 = 16 - 3 = 13
52 = 25 - 6 = 19
62 = 36 - 9 = 27
72 = 49 - 12 = 37
82 = 64 - 15 = 49
92 = 81 - 18 = 63. 