For an AP if the difference of 25th and 20th term is 45, find the common difference
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Answered by
3
Answer:
T25 - T20 = 45
a + 24d - a + 19d = 45
24d - 19d = 45
5d =45
d = 9
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Answered by
1
Let first term be a,
According to question,
a 25 - a20=45
⟹a+24d−(a+19d)=45
⟹5d=45
So, d=9
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