Sequences and Series
Interactive practice questions
How is the common difference of an arithmetic sequence obtained?
By choosing any term after the first and subtracting the preceding term from it.
A
By choosing any term after the first and adding the subsequent term to it.
B
By choosing any term after the first and dividing it by the preceding term.
C
By choosing any term after the first and adding the preceding term to it.
D
Easy
< 1min
Find the sum of the first $10$10 terms of the arithmetic sequence defined by $a=6$a=6 and $d=3$d=3.
Easy
2min
Find the sum of the first $10$10 terms of the arithmetic sequence defined by $a=-18$a=−18 and $d=4$d=4.
Easy
2min
Find the sum of the first $15$15 terms in the arithmetic sequence $2+6+10$2+6+10 $+$+ ...
Easy
2min
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