Question # 1

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Associative law of multiplication

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ab - ba

a(bc) = (ab) c

a(b + c) = ab +ac

(a +b)c = ac + bc

If a = [1,4,3] and B= [2,-1,5] athen the mid point M of AB is:

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[1,1,1.5]

[2,2,1.5]

[1.5,1.5,4]

None of these

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1

0

-2

3

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1

0

The maximum value of sinθcosθis

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1

1/2

1/4

1/6

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0

1

-A

-1

Two circle s1: x2+ y2 +2x- 2y- 7= 0: s2: x2+ y2- 6x+ 4y+ 9= 0

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Touch externally

Touch internally

Intersects each other

Do not intersects

The roots of (b-c)x2+(c-a) x+a-b=0 are equal if

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2b = a+c

2a = b+c

2c = a+b

a + b + c =0

Sum of first n terms of an arithmetic series is

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