Tonight, my friends and I went to the mall. We planned to buy some shirts and pants, but suddenly... we found this!
These are number/size pins. They are typically used in hanger to denote the size of the clothes. We then decide to play some kind of Hidden Object puzzle, where we have to find at least a pin with a specified number, e.g. pin of 30.
Now it's your turn. Can you find four pins of 50 in this image?