can any 1 solve ques 18 plz?

Alec_t

Joined Sep 17, 2013
15,121
Welcome to the forum!
1) We don't do text-speak here.
2) We don't do your homework for you, but we can give guidance if you show us your effort so far and point out where you are stuck.
 

WBahn

Joined Mar 31, 2012
32,880
You need to show YOUR best attempt to solve YOUR homework problem.

In this case, at least describe the basic strategy that you think should be used to get at the answer.
 
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