The factor pairs of 840 are (840,1)(420,2)(280,3)(210,4)(168,5)(140,6)(120,7)(105,8)(84,10)(70,12)(60,14)(56,15)(42,20)(40,21)(35,24)(30,28)
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Stings with four factor that make 840
Yes
840=2*2*2*3*5*7
36 of them.
Prefix 'kilo' is used to denote multiples of meter and uses factor 103 or 1000 To convert meters to kilometers, value of meters has to be divided by factor used with prefix 'kilo': 840 meters = 840 / 103 = 840 / 1000 = 0.84 kilometer