alleryStart learning →The common difference of the AP $3,\ 7,\ 11,\ 15,\ \ldots$ is
A4
B3
C7
D11
Answer & Solution
Correct answer: A. 4
1. The common difference is d = (any term) − (previous term).
2. d = 7 − 3 = 4 (and 11 − 7 = 4, 15 − 11 = 4).
3. So d = 4.
_Source: Karnataka SSLC (KSEEB) Class 10 Mathematics, Ch1 'Arithmetic Progressions' (common difference)_
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