Question # 1

∀a,b ε R, ab = be is a

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Commutative law of multiplication

Closure law of multiplication

Associative law of multiplication

Multiplicative identity

At a point 15 meters away from the base of a 15 meters high house, the angle of elevation of the top is

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90°

60°

30°

45°

System of linear equation is inconsistent if

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System has no solution

System has one solution

System has two solution

None of above

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0

-1

1

-2

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If a₁, r are first term and the common ratio respectively then the sum of an infinite geometric series is

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In(x²- x + 1) + c

In(2x - 1) + c

The common ration of a geometric sequence cannot be

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0

1

2

3

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The area between the x-axis and the curve y = x² + 1 from x = 1 to 2 is:

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15/6

15/4

10/4

10/3

The set {1,-1,i,-i}

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Form a group w.r.t addition

Form a group w.r.t multiplication

Does not form a group w.r.t multiplication

Not closed under multiplication

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