o. Answer frue or false using the divislbility rules. a. 189870 is divisible by 2 Tree b. 134955 is divisible by 5 . Trie c. 134122 is divisible by 3 . Flase d. 187324 is divisible by 4 .

The number 189870 ends with a 0, which makes it divisible by 2. So, true! For the divisibility by 5, since 134955 ends with a 5, that also holds true. Now, 134122, when you sum its digits (1+3+4+1+2+2 = 13), is not divisible by 3, making it false. Finally, for 187324 to be divisible by 4, you only need to check the last two digits (24), which is divisible by 4, so that’s true. Now, let's dive into some math lore! Did you know that the rules of divisibility have been used since ancient times? The Egyptians and Babylonians both had their own methods for determining whether numbers could be neatly divided without a remainder, showing the value of math long before calculators! If you're ever stuck on divisibility rules, a great tip is to break the number down into its digits. That can help you quickly identify patterns, especially for the numbers 3 and 9, as you only need to sum the digits. And remember: aligning with rules can help dodge pitfalls, such as miscalculating a sum or forgetting to apply the rule correctly!