In the AP 1, 4, 7, 10, the common difference is:
A1
B4
C7
D3
Answer & Solution
Correct answer: D. 3
1. Subtract each term from the one after it.
2. 4 minus 1 is 3 and 7 minus 4 is also 3.
3. So the common difference is 3.
4. The answer is 3.
_Source: NCERT Class 9 Mathematics, Ch 8 'Predicting What Comes Next: Exploring Sequences and Progressions'_
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