Question

For an A.P if a) t7 = 21 and t11 =37 then find a and d, t25 and find n if tn = 61.

b) t16 = 108 and t9 = 59 then find a and d, t34 and find n if tn = 696 c) t10 = 14

and t16 = 23 then find a and d, t41 and n if tn = 59.d) t11 = 77 and t19 = 141 find

a and d, t50 and n if tn = 237 e) t12 = 57 and t17 = 82 find a and d, t47 and n if

tn = 172.
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Answer 1

Answer:

it's to lengthy and difficult question