• #### INDIAN NAVY SAILORS Numerical Ability Study Material

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##### is equal to?

a) 1 + a2 + b2 + c2
b) 1 - a2 + b2 + c2
c) 1 + a2 + b2 - c2
d) 1 + a2 - b2 + c2

a) (39, -3, 11)
b) (-39, 3, 11)
c) (-39, 27, 11)
d) (-39, -3, 11)

a) ±√6
b) ±√2
c) ±√3
d) √2 , √3

a) G. P.
b) A. P.
c) H. P.
d) None of these

a) 57/10
b) (-57/10)
c) 81/10
d) 55/10

##### If a, b, c are in A.P. , then the value of is?

a) X - (a + b + c)
b) 9x2 + a + b + c
c) A + b + c
d) 0

##### is equal to?

a) (p - q)(q - r)(r - p)
b) Pqr
c) Zero
d) 3pqr

a) 8
b) -8
c) 400
d) 1

a) X = 3, y = 1
b) X = 0, y = 0
c) X = 0, y = 3
d) X = 1, y = 3

a) 6k
b) K/6
c) 2k
d) 3k