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With first term 6 and common difference 3, the first four terms are:
A3, 6, 9, 12
B6, 12, 18, 24
C6, 9, 12, 15
D6, 3, 0, minus 3
Answer & Solution
Correct answer: C. 6, 9, 12, 15
1. Start at 6.
2. Add 3 each time.
3. The terms are 6, 9, 12, 15.
_Source: NCERT Class 10 Mathematics, Chapter 5, Arithmetic Progressions._
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