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Sequences and Series — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsSequences and Series1 Mark
MCQ
If general term of an $A.P.$ is $3n$ then find common difference.
  • A
    $2$
  • ✓
    $3$
  • C
    $5$
  • D
    $6$
✓

Answer

Correct option: B.
$3$
Given, $a_n = 3n$.
We know, $d = a_n- a_{n-1}$
$= 3n – 3(n - 1)$
$= 3.$

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