1, 5, 13, 25, 65, 325
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There are infinitely many possible answers. Three examples are: 1 * 325 2 * 162.5 (-10)*(-32.5)
650
You calculate this as follows.Call your number x.x = 0.325325325...Multiply it by 1000 - this is 10 to the power 3, where 3 is the number of digits that repeat.Now subtract 1000x minus x:1000x = 325.325325325...x = 0.325325325...----------------------------------999x = 325Solving for x, x = 325 / 999. You must still check whether you can simplify this.You calculate this as follows.Call your number x.x = 0.325325325...Multiply it by 1000 - this is 10 to the power 3, where 3 is the number of digits that repeat.Now subtract 1000x minus x:1000x = 325.325325325...x = 0.325325325...----------------------------------999x = 325Solving for x, x = 325 / 999. You must still check whether you can simplify this.You calculate this as follows.Call your number x.x = 0.325325325...Multiply it by 1000 - this is 10 to the power 3, where 3 is the number of digits that repeat.Now subtract 1000x minus x:1000x = 325.325325325...x = 0.325325325...----------------------------------999x = 325Solving for x, x = 325 / 999. You must still check whether you can simplify this.You calculate this as follows.Call your number x.x = 0.325325325...Multiply it by 1000 - this is 10 to the power 3, where 3 is the number of digits that repeat.Now subtract 1000x minus x:1000x = 325.325325325...x = 0.325325325...----------------------------------999x = 325Solving for x, x = 325 / 999. You must still check whether you can simplify this.
1625
To find the value of the unknown number, you would divide 325 by 5. This gives you the value of the unknown number, which is 65. Therefore, 5 times 65 equals 325.