what is the last term of the A.P :a,a+d,a+2d,a+3d....containing n terms?
Answers
Answered by
4
Answer:
a + (n-1) d is your answer mate!.. hope it helps you.
Answered by
1
option d
a= 28
see carefully
Given:
An=22
n= 13
d= -1/2
Find:
first term ,a
Solution:
An = a + (n-1) d
22 = a + ( 13-1 )× (-1/2)
22=a+ [12 × -1/2 ]
22 = a +[-6]
22=a-6
22 + 6 = a
28= a
option d
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