1/(10 power 18) - 1/(10 power 20) = ?

Answer Posted / muthuganesan

=1/(10 power 18) - 1/(10 power 20)

=((10 power 20) - (10 power 18)) / ((10 power 18) * (10
power 20)) // cross multiply

=((10 power 18) * (100 - 1)) / (10 power 38)

=99 / 10 power 20 //ans//

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