# Each of the numbers x1, x2, .....,xn, n > 4, is equal to 1 or -1. Suppose, x1x2x3x4 + x2x3x4x5 + x3x4x5x6 + ....... + xn-3xn-2xn-1xn + xn-2xn-1xnx1 + xn-1xnx1x2 + xnx1x2x3 = 0, then,

1.  n is even

2.  n is odd

3.  n is an odd multiple of 3

4.  n is prime

4

n is even

Explanation :
No Explanation available for this question

# There are three cities A, B and C. Each of these cities is connected with the other two cities by at least one direct road. If a traveller wants to go from on city (origin) to another city (destination), she can do so either by traversing a road connecting the two cities directly, or by traversing two roads, the first connecting the origin to the third city and the second connecting the third city to the destination. In all there are 33 routes from A to B (including those via C). Similarly, there are 23 routes from B to C (including those via A). How many roads are there from A to C directly

1.  6

2.  3

3.  5

4.  10

4

6

Explanation :
No Explanation available for this question

# If a/b = 1/3, b/c = 2, c/d = 1/2, d/c = 3 and e/f = 1/4, then what is the value of abc/def

1.  3/8

2.  27/8

3.  3/4

4.  27/4

5.  1/4

5

3/8

Explanation :
No Explanation available for this question

# Consider a sequence where the nth term, tn=n/(n+2), n = 1, 2, .... The value of t3 x t4 x t5 x ....... x t53 equals

1.  2/495

2.  2/477

3.  12/55

4.  1/1485

5.  1/2970

5

2/495

Explanation :
No Explanation available for this question

# Which among 21/2, 31/3, 41/4, 61/6 and 121/12 is the largest

1.  21/2

2.  31/3

3.  41/4

4.  61/6

5.  121/2

5

31/3

Explanation :
No Explanation available for this question

# The length, breadth and height of a room are in the ratio 3 : 2 : 1. If the breadth and height are halved while the length is doubled, then the total area of the four walls of the room will

1.  remain the same

2.  decrease by 13.64%

3.  decrease by 15%

4.  decrease by 18.75%

5.  decrease by 30%

5

decrease by 30\%

Explanation :
No Explanation available for this question

# A semi-circle is drawn with AB as its diameter. From C, a point on AB, a line perpendicular to AB is drawn meeting the circumference of the semi-circle at D. Given that AC = 2 cm and CD = 6 cm, the area of the semi-circle (in sq cm) will be

1.  32π

2.  50π

3.  40.5π

4.  81π

5.  undeterminable

5

50π

Explanation :
No Explanation available for this question

# What is the weight of Praja's luggage

1.  20 kg

2.  25 kg

3.  30 kg

4.  35 kg

5.  40 kg

5

35 kg

Explanation :
No Explanation available for this question

# What is the free luggage allowance

1.  10 kg

2.  15 kg

3.  20 kg

4.  25 kg

5.  30 kg

5

15 kg

Explanation :
No Explanation available for this question

1.  3

2.  4

3.  5

4.  6

5.  7

5