Question # 1

If a=5j + 2j,b=2i -3j, then|a+2b|=

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√21

√97

√39

None of these

If |a x b|2 + (a,b)2 = _____

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|a|2 + |b|2

|a|2- |b|2

|a|2|b|2

None

Arithmetic mean between x - 3 and x + 5 is

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x + 1

x + 2

x + 3

x + 4

How many arrangements of the letters of the word MI SSI PPI, taken all together can be made?

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(ABC)' =

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CBA'

CBA

C' B' A'

None of these

The general term of a sequence is denoted by

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a₁

a_n

n

s_n

Number of lines passing through three non-collinear points is

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2

3

1

0

∞

Ifα,β are non-real roots of ax2 + bx +c =0 (a,b,c∈ Q),then

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α = β

αβ = 1

α = β

α = 1

(51)⁴is equal to

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7065201

8065201

6765201

6565201

If f(x) = x³- 2x²+ 4x -1 then f(2) is

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7

-16

16

-9

Co-ordinate of a point on the parabola y² = 8x whose focal distance is 4 are:

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(2 , 4)

(-2 ,-4)

(-2, 4)

(2,-4)

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