Puzzle 1: What number replaces the question mark?
1
+ 1 = 8
2
+ 2 = 32
3
+ 3 = 72
4
+ 4 = ?
Answer: 128
4
(1 + 1) = 8
8
(2 + 2) = 32
12
(3 + 3) =72
16
(4 + 4) = 128
Puzzle 2: What comes next in the sequence?
1
+ 5 = 18
2
+ 10 = 36
3
+ 15 = 54
4
+ 20 =?
Answer: 72
The
logic applied here is 3 (a + b)
3
(1 + 5) = 18
3(2
+ 10) = 36
3(3
+ 15) = 54
3(4
+ 20) =72
Puzzle 3: What
number replaces the question mark?
If
1 x 1 = 2
2
x 2 = 4
3
x 3 =6
4
x 4 = 8
Then
4 x 1 =?
Answer: 5
The
logic applied here is (a + b)
So,
4 + 1 = 5
Puzzle 4: What
number replaces the question mark?
Answer: Sum of numbers on each line is 15.
6
+ 5 + 4 = 15
3
+ 5 + 7 = 15
9
+ 5 + 1 = 15
8
+ 5 + 2 = 15
So,
answer is 2.
Puzzle 5: What
number replaces the question mark?
If
1 - 1 = 0
2
- 1 = 3
3
- 1 = 8
Then
5 - 1 =?
Answer: 24
1
x 1 - 1 = 0
2
x 2 - 1 = 3
3
x 3 - 1 = 8
5
x 5 - 1 = 24
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