Question

A 1.5V battery is connected to a small light bulb with a resistance of 3.5 what is the current in the bulb?

Answer 1

Technically, we don't have the information needed to calculate the current,
because you haven't mentioned the units of the 3.5 .

Since the 3.5 is a resistance, we strongly suspect ... and we'll therefore
assume ... that the  3.5  has the units of ohms.    Then . . .

  Current = (voltage) / (resistance)  =  (1.5/3.5) = 3/7 of an Ampere.

                                                                   (429 mA, rounded)