If 18th and 11th term of an A.P. are in the ratio 3 : 2, then its 21st – McqOptions

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1.	If 18th and 11th term of an A.P. are in the ratio 3 : 2, then its 21st and 5th terms are in the ratio
A.	: 2
B.	: 1
C.	: 3
D.	: 3
Answer» C. : 3

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