At a glance
1
Occurrences
questions
1
Years
1
Papers
1
Worked
100%
When this method shows up
Years in which at least one question on this paper triggers the method.
Other top methods in Combinatorics & Binomial
- Recognise a polynomial or rational expression as a known binomial or geometric series, then read off a coefficient×2
- Track magnitude with the ratio of consecutive terms or with iterated logarithms×2
- Equate coefficients of on two sides of an algebraic identity to prove a binomial sum×2
- Telescope a sum by writing each term as a difference ×2
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