# If x + y = 12 and xy = 27 their x3 + y3 =

1.  752

2.  754

3.  756

4.  780

4

756

Explanation :
No Explanation available for this question

# The value of   [(0.051*0.051*0 .051 f 0.041* 0.041*0.041)/ (0.051*0.051- 0.051*0.041 + 0.041*0.041)]  is

1.  0.92

2.  0.092

3.  0.0092

4.  0.00092

4

0.092

Explanation :
No Explanation available for this question

# If * means ridding 6 times the second number to the first number then (1 * 2) * 3 equals

1.  121

2.  31

3.  93

4.  91

4

31

Explanation :
No Explanation available for this question

# If2x = 3y = 6-z then (1/x+1/y+1/z) is equal to

1.  0

2.  1

3.  3/2

4.  -1/2

4

0

Explanation :
No Explanation available for this question

# The simplified value of (1-1/3) (1-1/4)(1-1/5)…….(1-1/99)(1-1/100) is

1.  2/99

2.  1/25

3.  1/50

4.  1/ 100

4

1/50

Explanation :
No Explanation available for this question

# The tangents are drawn at the extremities of a diameter AB of a circle with centre P. If a tangent to the circle at this point C intersects the other two tangents at Q and R, then the measure of the ‹QPR is

1.    450

2.  600

3.    900

4.    1800

4

900

Explanation :
No Explanation available for this question

# If x = √3+1/√3-1 and y= √3-1/√3+1 the value of x2 + y2 is

1.  14

2.  13

3.  15

4.  10

4

14

Explanation :
No Explanation available for this question

# √ [0.00001225/00005392] is equal to

1.  25/77

2.  35 / 73

3.  35/ 77

4.  25/ 73

4

35 / 73

Explanation :
No Explanation available for this question

1.  (0.5)2

2.

3.

4.  0.23

4

Explanation :
No Explanation available for this question

# A point O in the interior of a rectangle ABCD is joined with each of the vertices A, B, C and D. Then :

1.  OB + OD = OC + OA

2.  OB2 + OA2 = OC2 + OD2

3.  OB . OD = OC . OA

4.  OB2 + OD2 = OC2 + OA2

4