Sum of first 10 terms of an ap is 300 .also sum of next 10 terms is 700 find ap ?
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Answer:
sorry I don't understand your sum
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Answer:12,16,20,24,18........
Step-by-step explanation: As S10=300
S20-S10=700
S20-300=700
S20=1000
{as Sn=n/2[2a+(n-1)d]}
20/2{2a+[20-1]d}=1000
2a+19d=100-----------------------equation1
S10=300
10/2{2a+9d}=300
2a+9d=60-------------------------equation2
subtract both the equation we got,
d=4 and a=12
AP 12,16,20,24,28
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