4MA0 Higher January 2014 Paper 3 Q4

EdexcelHigherOld spec3 marksProperties of Numbers

(a) Write \(2^3 \times 2^4\) as a single power of 2 (1)

(b) \(280 = 2^n \times 5 \times 7\)
Find the value of \(n\). (2)

Scheme	Marks
\(2^7\)	B1
	(1)

Mark scheme (b)

Scheme	Marks
\(\dfrac{280}{35}\) or \(\dfrac{280}{5 \times 7}\) or 8 or 280 = 8 × 5× 7 or \(2^3\) or fully correct factor tree or repeated division or 2, 2, 2, 5, 7 or 2 × 2 × 2 × 5 × 7	M1
3	A1
	(2)
	(3 marks)

A1: cao