Find the 11th term from the last term (towards the first term) of the AP : 10, 7, 4, . . ., – 62.
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Step-by-step explanation:
your answer is -32
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Answer:
-32
Step-by-step explanation:
AP is 10,7,4,....,-62
here,
a = 10
D= 7-10
= -3
First let's find out which term is -62
Let
l = -62
l = a+(n-1)D
10+(n-1)-3=-62
(n-1)(-3)= -62-10
n-1=-72/-3
n= 24+1
n= 25
Now, we need to find out the 11th term from the last term
last term= 25th
second last term= 25-1=24th
third last = 25-2 = 23rd
And so on,
So 11th from last term = (25-10)th term = 15th term
So, we need to find out a(15)
a(n)= a+(n-1)D
putting values
a(15)= 10+(15-1)(-3)
= 10-42
= -32
Hope this helps you out...
:)
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