in an ap the first term is 2 the last term is 29 and the sum of the terms is 155. Find the common difference of the A.P
Answers
Answered by
47
By solving with the help of the equation
Sn=n/2(a+l)
We get n=10
Puting the value in
Tn=a+(n-1)d
By solving this equation
We get d=3
HOPE THIS WILL HELP U
Sn=n/2(a+l)
We get n=10
Puting the value in
Tn=a+(n-1)d
By solving this equation
We get d=3
HOPE THIS WILL HELP U
Answered by
12
Answer:
Step-by-step explanation:
a=2
An=29
Sn=155
By formula
Sn=n/2(a+an)
155=n/2(2+29)
155×2=n×31
310=31n
n=310/31
n=10
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