# The sum of the digits in a two-digit number is 5. If 9 is subtracted from the number, the result is the number with the digits reversed. The number is

1.  23

2.  32

3.  41

4.  14

4

32

Explanation :
No Explanation available for this question

# Three consecutive numbers such that twice the first, 3 times the second and 4 times the third together make 182. The numbers in question are

1.  18, 19 and 20

2.  19, 20 and 21

3.  20, 21 and 22

4.  21, 22 and 23

4

19, 20 and 21

Explanation :
No Explanation available for this question

# If x + y = 2, xy = 1, then the values of x and y are respectively

1.  0 and 2

2.  1/2 and 3/2

3.  1 and 1

4.  – 1 and 3

4

1 and 1

Explanation :
No Explanation available for this question

# The simultaneous equation 2x + 3y = 5 4x + 6y = 10 have

1.  no solution

2.  only one solution

3.   only two solutions

4.  several solutions

4

several solutions

Explanation :
No Explanation available for this question

# If x2 + ax + b = 0 and x2 + bx + a = 0 have a common root, then

1.  a + b = 0

2.  a + b = 1

3.  a – b – 1 = 0

4.  a + b + 1 = 0

4

a + b + 1 = 0

Explanation :
No Explanation available for this question

# If the roots of the equation ax2 + 2bx + c = 0 are α and β  then √ α/ β+√ β/ α is equal to

1.  2b / ac

2.  -2b / √ac

3.  2b / √ac

4.  –b/ √ac

4

-2b / √ac

Explanation :
No Explanation available for this question

# If one root of ax2 + bx + c = 0 is double the other, then a, b, c are related as

1.  2a2 = 9bc

2.  9a2 = 2bc

3.  2b2 = 9ac

4.  9b2 = 2ac

4

2b2 = 9ac

Explanation :
No Explanation available for this question

# If 2x = 4y = 8z and xyz = 288, then 1/2x + 1/4y + 1/8z is equal to

1.  11/8

2.  11/24

3.  11/48

4.  11/96

4

11/96

Explanation :
No Explanation available for this question

# Which of the following can be calculated from the given data

1.  Maximum distance travelled

2.  Minimum distance travelled

3.  Neither

4.  Both

4

Minimum distance travelled

Explanation :
No Explanation available for this question

1.  4t – 1

2.  4t – 2

3.  2(2t – 2)

4.  4t + 8

4