# The set of all real x satisfying the in equality 3-|x|/4-|x|≥ 0

1.  [-3, 3] U (-∞, -4) U (4, ∞)

2.  (-∞, -4) U (4, ∞)

3.  (-∞, -3) U (4, ∞)

4.  )(-∞, -3) U (3, ∞)

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[-3, 3] U (-∞, -4) U (4, ∞)

Explanation :
No Explanation available for this question

# {x є IR : [x - |x|] = 5}is equal to

1.  [IR, the set of all real numbers

2.  φ, the empty set

3.  {x є IR : x < 0}

4.  {x є IR : x > 0}

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&#966;, the empty set

Explanation :
No Explanation available for this question

# The function f : c → c defined by  f(x) = (ax+b) / (cx+d) for x ε c where bd ≠ 0 reduces to a constant function, if

1.  a = c

2.  b = d

4.  ab = cd

4

Explanation :
No Explanation available for this question

# If N denotes the set of all positive integers and if f:N->N is defined by f(n) = thesum of positive divisors of n then, f (2k, 3), where k is a positive integers is

1.  2k+1 -1

2.  2(2k+1 -1 )

3.  3(2k+1 -1 )

4.  4(2k+1 -1 )

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2(2<sup>k+1</sup> -1 )

Explanation :
No Explanation available for this question

1.  1

2.  2

3.  3

4.  1 / 2

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1

Explanation :
No Explanation available for this question

# If a,b,c ≠ 0 and belong to the set { 0,1,2,3,................9 then log10[(a+10b+102c)/(10-4a+10-3b+10-2c)] is equal to

1.  1

2.  2

3.  3

4.  4

4

4

Explanation :
No Explanation available for this question

# {n (n+1) (2n+1) : n Є Z }  is subset of

1.  {6k : k Є Z}

2.  {12k : k Є  Z}

3.  {18k : k Є Z}

4.  {24k : k Є Z}

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{6k : k &#1028; Z}

Explanation :
No Explanation available for this question

# A three digit number  n such that the last two  digits of it are equal and differ from the first the number of such n is

1.  64

2.  72

3.  81

4.  900

4

81

Explanation :
No Explanation available for this question

# If (1+x)15=a0+a1x+…….+a15x15, then

1.  110

2.  115

3.  120

4.  135

4

120

Explanation :
No Explanation available for this question

1.  r. 2r

2.  (2r-1)2r

3.  r. 22r+1

4.  (2r+1) 2r

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