1.2 Arithmetic sequences and seriesIB Maths: Applications and Interpretation SL: Mind map

Exam questions on 1.2 Arithmetic sequences and series

1. An arithmetic sequence has first term $u_1=7$ and common difference $d=4$.
   Find the value of $n$ for which $u_n=135$.2 marks
2. A cyclist trains for 20 days. On day 1 she cycles 12 km, and on each following day she cycles 1.5 km further than on the previous day.
   Find the first day on which she cycles more than 30 km.2 marks
3. An arithmetic sequence has $u_3=11$ and $u_8=31$.
   Find the common difference $d$ and the first term $u_1$.3 marks