Number, letter and figural series with missing terms.
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Q1 · Sequences and Series · HARD
Find the sum of the first 20 terms of the series: 3, 7, 13, 21, 31, ...
Q2 · Sequences and Series · EASY
Find the next term in the series: 2, 6, 12, 20, 30, ?
Q3 · Sequences and Series · MEDIUM
What is the 10th term of the series: 1, 4, 9, 16, 25, ...?