14. If 6th term of AP is 27 and 1st term is 7 then common difference will be?
A. 3
B. 5
C. 7
D. 4
Answers
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a= 7
t n = a+(n-1)d
t6 = 7+(6-1)d
27 = 7+5d
20 = 5d
d= 4
correct option d
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