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If the p.d.f of a c.r.v. X is f(x)=x^2/1...

If the p.d.f of a c.r.v. X is `f(x)=x^2/18`, for `-3 < x < 3`
and `=0`, other wise then `P(|X| < 1)`=

A

(a) `1/27`

B

(b) `1/28`

C

(c) `1/29`

D

(d) `1/26`

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