Question

The rate constant (K) for the reaction 2A + B → Products was found to be 2.58 × 10⁻⁵ L mol⁻¹ s⁻¹ after 15 s,

2.59 × 10⁻⁵ L mol⁻¹ s⁻¹ after 30 s and 2.57 × 10⁻¹ L mol⁻¹ s⁻¹ after 50 s. The overall order of the reaction is