the sum of the first 5 terms of an ap is 25 and the sum of its next 5 terms is -75 find the 10 term of its ap
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Hi Mate!!!
Sum of first five terms is
S5 = 25
Sum of next five terms is
S10 - S5 = -75
=>
S10 = -75 + 25
S10 = -50
So, Sum of 10th term is -50.
Have a nice time
Sum of first five terms is
S5 = 25
Sum of next five terms is
S10 - S5 = -75
=>
S10 = -75 + 25
S10 = -50
So, Sum of 10th term is -50.
Have a nice time
nidhi5917:
a=13
a10= a+9d
13+9(-4)
13(+36)
13(+36)
13(+36)
13(+36)
sorry
13+(-36)
13-36
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2
have a nice time.....
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