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प्रश्न
In the A.P. 2, –2, –6, –10, ..... common difference (d) is ______.
विकल्प
–4
2
–2
4
उत्तर
In the A.P. 2, –2, –6, –10, ..... common difference (d) is – 4.
Explanation:
d = a2 – a1
= –2 – 2
= – 4
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