laboratory connects a 16§Ù resistor, 23§Ù resistor, and a 34§Ù resistor in series and then comes the arrangement to a 36V dc source. How much current is in the circuit?

Is §Ù supposed to be "ohms"?

Is "comes" really the right verb here? You should not begin with the word "laboratory"

The total series resistance is
R = 16 + 23 + 34 = 73 ohms

I = V/R = 36/73 Amperes
Express it as a decimal.