Puzzle 1: What replaces the question mark?
Answer: 3
Explanation: Adding two boxes diagonally
4 +2 = 6
2 + 1 = 3
1 + 6 = 7
6 + ? = 9 ⇒ 9 - 6 = 3
So, 6 + 3 = 9
3 + 7 = 10
10 + 9 = 19
[Or]
19 - 10 = 9
10 - 7 = 3
7 - 6 = 1
9 - 3 = 6
6 - 2 = 4
Puzzle 2: What replaces the question mark?
Answer: 99
Explanation:
3 x 2 = 6 +
1 = 7
5 x 4 = 20 +
3 = 23
7 x 6 = 42 +
5 = 47
9 x 8 = 72 +
7 = 79
10 x 9 = 90
+ 9 = 99
Puzzle
3: What
replaces the question mark?
Answer: 8
Explanation: Adding horizontally or vertically we
get 15
⇒ 1 + 5 + 6 +
3 = 15 (or) 1 + 4+ 9 + 1 = 15
⇒ 4 + ? + 1 +
2 = 15 (or) 5 + ? + 1 + 1 = 15
⇒ 15 - 7
= 8
⇒ 9 + 1 + 2 +
3 = 15 (or) 6 + 1 + 2 + 6 = 15
⇒ 1 + 1 + 6 +
7 = 15 (or) 3 + 2 + 3 + 7 = 15
Puzzle 4: What replaces the question mark?
Answer: 4
Explanation:
6 x3 = 18
7 x 9 = 63
6 x 4 = 24
7 x 6 = 42
Puzzle 5: How many triangles are there?
Answer: 13
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