Brain Teasers 3: A fun and challenging worksheet with six puzzles designed to test logic, observation, and problem-solving skills.

Here are the step-by-step solutions for each brain teaser:

1. The Number Pattern
Let's look at how the first number turns into the second number.
* 834 = 28: Multiply the first two digits ($8 \times 3 = 24$) and add the last digit ($24 + 4 = 28$).
* 675 = 47: Check if the rule works here. $6 \times 7 = 42$, and $42 + 5 = 47$. It works!
* 918 = 17: Check again. $9 \times 1 = 9$, and $9 + 8 = 17$. It works!

Now apply this rule to 527:
* Multiply the first two digits: $5 \times 2 = 10$
* Add the last digit: $10 + 7 = 17$

2. The Odd Hand Out
Look closely at the fingers on each hand.
* Hand 1, Hand 3, and Hand 4 all have their middle finger sticking up (or involved in the main gesture).
* Hand 2 has its index finger (pointer finger) sticking up.
Therefore, Hand 2 is the different one.

3. The Matchstick Puzzle
The image shows the number 38. We need to move only 2 matches to make the highest number possible.
* Take the two horizontal matches from the middle of the "8".
* The "8" becomes a "0".
* Place those two matches vertically on the left side of the "3" to turn it into an "8".
* The new number is 80, which is much higher than 38.

4. The Riddle
* "Throw me off a tall building and I won't hurt me": This describes something light and soft, like a feather or paper.
* "Put me in water I break": If you put paper in water, it gets soggy and falls apart (breaks). A feather would just float.
The answer is Paper.

5. The Letter Sequence
Let's count the steps between letters in the alphabet:
* F to K: Skip G, H, I, J (Skip 4 letters).
* K to O: Skip L, M, N (Skip 3 letters).
* O to R: Skip P, Q (Skip 2 letters).

The pattern is decreasing by one skip each time (-4, -3, -2...). The next step should be skipping only 1 letter.
* After R, we skip S.
* The next letter is T.

6. The Upside-Down Picture
If you look at the picture without turning your head or the page, you will see a face that looks upside down. However, notice the hair. The hair is hanging *upwards* towards the top of the page. For a person standing normally, gravity pulls hair down. Since the hair is defying gravity relative to the face's orientation, the picture itself is printed upside down.

Final Answer:
1. 17
2. Hand 2
3. 80
4. Paper
5. T
6. The picture is upside down