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प्रश्न
If the terms 10, a, 40 are in A.P., then find the value of a.
विकल्प
35
20
25
30
उत्तर
25
Explanation:
The terms 10, a, 40 are in A.P.
Then t2 – t1 = t3 – t2
So, 40 – a = a – 10
⇒ 40 + 10 = a + a
⇒ 2a = 50
⇒ a = 25
Thus, the value of a is 25.
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