91-S1-Q4 Read more about 91-S1-Q4 Prison compound, square, Black Tower, distance, area, maximum value, C1. [STEP I 1991 Question 4 (Pure)]
91-S1-Q2 Read more about 91-S1-Q2 Frosty the snowman, melting, ratio of volume, surface area, maximum value, C1. [STEP I 1991 Question 2 (Pure)]
88-S1-Q2 Read more about 88-S1-Q2 Trigonometry, stationary point, maxima, minima, derivatives. [STEP I 1988 Question 2 (Pure)]
