There are four three-digit n...
There are four three-digit numbers that share this property: the number itself, its double and its triple contain each digit from 1 to 9 exactly once. For example, 192 is one of them because 192, 384, 576 contain 1 to 9 each once. 273 is another one of them because 273, 546, 819 contain 1 to 9 each once. Can you find the other two numbers and calculate the product of these two numbers?Correct answers: 23
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
A kindergarten student was hav...
A kindergarten student was having trouble putting on his boots, and asked his teacher for help. Even with her pulling and him pushing, the boots still didn't want to go on. Finally they got both boots on. She grimaced when the little boy said, "They're on the wrong feet."
Sure enough, they were. The teacher kept her cool as together they worked to get the boots back on - this time on the correct feet. The little boy then announced, "These aren't my boots." The teacher sighed and pulled the boots off.
The boy then said, "They're my brother's boots. My Mom made me wear them."
The teacher felt like crying, but she mustered up the strength to wrestle the boots back onto his feet. "Now," she said, "where are your mittens?"
The boy replied, "I stuffed them in my boots...."
Sure enough, they were. The teacher kept her cool as together they worked to get the boots back on - this time on the correct feet. The little boy then announced, "These aren't my boots." The teacher sighed and pulled the boots off.
The boy then said, "They're my brother's boots. My Mom made me wear them."
The teacher felt like crying, but she mustered up the strength to wrestle the boots back onto his feet. "Now," she said, "where are your mittens?"
The boy replied, "I stuffed them in my boots...."