Question

what is the last term of the A.P :a,a+d,a+2d,a+3d....containing n terms?
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Answer 1

Answer:

a + (n-1) d is your answer mate!.. hope it helps you.

Answer 2

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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