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No. An easy way to tell if a number is divisable by 5 is if the last digit in the number ends with '5' or '0'.
Are you asking me to tell you the answer? Because its easy and simple .
Tell them to think of a number between 1-9. Tell them to double it Tell them to add, let's say, 4 Tell them to half it Tell them to tell them their answer and their answers would be 2. How? Easy. Half of the number you tell them to add after they double their, is the number they started with. In this case, 2 would be their starting answer because half of 4 is 2 It also works with odd numbers, if you're good at calculating decimals So remember. Think of a number. Double it Add a number of your choice Half it Ask for their answer. Half the number you told them to add Tell them And there you go, they'll think you're a mind-reader
To determine if a number is even or odd, you can check if the number is divisible by 2. If the number is divisible by 2 without leaving a remainder, then it is even. If the number is not divisible by 2 or leaves a remainder when divided by 2, then it is odd.
You can tell if the number ends in either 5 or 0