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The 11th term of an AP -5, (-5)/(2), 0, ...

The 11th term of an AP -5, `(-5)/(2)`, 0, `(5)/(2)`, …

A

-20

B

20

C

-30

D

30

Text Solution

Verified by Experts

The correct Answer is:
B
Given AP, `-5, -(5)/(2), 0, (5)/(2)`
Here `a= -5, d= (-5)/(2) +5=(5)/(2)`
` :.a_(11)=a+(11-1)d " " [ :' a_(n)=a+(n-1)d] `
` " " = -5+(10)xx(5)/(2)`
` " " =-5+25=20`
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