Answers

2016-02-16T19:10:34+05:30
Let tht ..... = x
then, 
10 + 14 + 18 + 22 + x + 104 = 168 + x
1 1 1
2016-02-16T19:14:05+05:30
Sum = (a1+an)*n/2

an = a1+(n-1)d
104 = 10 + (n-1)4
94 = (n-1)*4
49 = (n-1)*2

So, n - 1 = 49/2

But n (number of terms) has to be an integer.

Hence the question is wrong or the final term is not 104
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