Arithmetic and Geometric Progression
Q: Given sequence 1,4,7,... find 20th term.
Did You Know?
The collocation is 'set off'. It means to begin a trip or journey. Example: 'We set off early in the morning to avoid traffic.' Other collocations for starting journeys include 'start out' or 'head out'. Collocations are fixed phrases that native speakers use instinctively.
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