Question # 1

The sum of first 60 natural numbers is

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1830

3660

1640

1770

Given two independent event A and B such that P(A) = 0.30 and P(B) = 0.60. Probability of getting neither A nor B is

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0.28

0.13

0.12

0.42

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Onto function is also called

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Binjective function

Injective function

Surjechive function

None of these

If the sum of two unit vectors is a unit vector the the magnitude of their difference is

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√2

√3

1

None of these

A square matrix A = [aij] is upper triangular when

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cij = 0

bij = 0

aij = 0 for all i > j

dij = 0

Which element is the additive inverse of (a, b) in Complex numbers?

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(a, 0)

(0, b)

(a, b)

(-a, -b)

The differential equations of all conis whose axes coincide with the co-ordinate axis is

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both a & c

(a,0) x (c,0) =

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(0,ac)

(ac,0)

(0,0)

(a,c)

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An empty set

Universal set

A singleton set

None of these

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