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sum of squares of three consecutive odd numbers is 2531.Find these 3 odd numbers?

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RRB Other Question

A train 270m long is running at speed 120 kmph.It crosses another train which is running at speed of 80 kmph in opp direction on parallel track in 9 sec.What is the length of another train? In boolean algebra A+A+A.....A is same as

a.0
b.A
c.n*A
d.A^n