I have problem with these two problems. Please explain or Correct them. These are the problems from Exponents and powers chapter tests grade 8.I am sure the conversion factor taken is wrong. Q17. Use the following information to answer the next question. Some paper sheets (each of thickness 0.015 mm) are piled together in a stack. The thickness of the stack is 2.4 × 10−4m.How many paper sheets are there in the stack? A : 16 B : 36 C : 160 D : 360Thickness of each paper = 0.015 mmThickness of the stack = 2.4 × 10−4m∴ Number of paper sheets in the stack = 1.6 × 10−4 + 5 = 1.6 × 10= 16The correct answer is A. Q18. If the area of a piece of paper is 6 square millimetres, then what is the area of the piece of paper in square metres? A : 6 × 10−3 B : 6 × 10−4 C : 6 × 10−6 D : 6 × 10−8 Area of the piece of paper = 6 mm2 We know that,1000 mm = 1 mThe correct answer is C.

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