NO!!
'10' is a factor of numbers ending in '0' e.g. 1000000.
'15' & '25' both end in '5'
10,15, & 25, have a factor of '5' .
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No, 10 is not a factor of either 15 or 25. Any number for which 10 is a factor will end in 0. Both 15 and 25 have 5 as a factor, but not 10.
The GCF is 5.
10, 15 , 20, 25, 30...
The GCF of 5, 10, 15, and 25 is 5. Since 5 is a factor of each of the other numbers in the set, you know that it's the GCF.
The greatest common factor of 15, 20, and 25 is 5.
10 to the power of -15 is 1/10^15. (1/1,000,000,000,000,000 [15 zeroes])It can also be written as 0.000000000000001 (There are 15 zeroes).OR -1,000,000,000,000,000 (15 zeroes).