AceGCSE
GCSEPricingAbout us

Free web sample

Try 4 questions here. The full topic has 60 questions in the app.

1 / 4

Maths · Recursive sequences

Crossover

A sequence is defined by u1=5u_1=5 and un+1=un+4u_{n+1}=u_n+4. Find u5u_5.

Choose an answer — or press 1234