4MA0 Higher January 2015 Paper 4R Q5

EdexcelHigherOld spec3 marksSequences

5 Here are some rows of a number pattern.

Table with columns Row number, Column 1, Column 2, Column 3. Row 1: 1 × 3 + 1, 4, 2 squared. Row 2: 2 × 4 + 1, 9, 3 squared. Row 3: 3 × 5 + 1, 16, 4 squared. Then a later row with 676 in Column 2, and a final row n with the other cells empty
(a) Write down the Row number of the row that has 676 in Column 2 (1)
(b) For Row number \(n\),
(i) write down an expression, in terms of \(n\), that should go in Column 1
(ii) write down an expression, in terms of \(n\), that should go in Column 3
(2)
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