waecmaths question: Express 2.7864 × 10–3 to two significant figures Option A: 0.28 Option B: 0.27 Option C: 0.0028 Option D: 0.0027 waecmaths solution: To 2s.f 0.0027864 maths year: WAEC MAY/ JUNE 2009maths topics: Errors, approximation and percentages
