# A milkman mixes 20 litres of water with 80 litres of milk. After selling one-fourth of this mixture, he adds water to replenish the quantity that he has sold. What is the current proportion of water to milk

1.  2 : 3

2.  1:2

3.  1:3

4.  3:4

4

2 : 3

Explanation :
No Explanation available for this question

# If the sum of the first 11 terms of an arithmetic progression equals that of the first 19 terms, then what is the sum of the first 30 terms

1.  0

2.  –1

3.  1

4.  Not unique

4

0

Explanation :
No Explanation available for this question

# If a man cycles at 10 km/hr, then he arrives at a certain place at 1 p.m. If he cycles at 15 km/hr, he will arrive at the same place at 11 a.m. At what speed must he cycle to get there at noon

1.  11 km/hr

2.  12 km/hr

3.  13 km/hr

4.  14 km/hr

4

12 km/hr

Explanation :
No Explanation available for this question

# On January 1, 2004 two new societies, S1, and S2, are formed, each with n members. On the first day of each subsequent month, S1 adds b members while S2 multiplies its current number of members by a constant factor r. Both the societies have the same number of members on July 2, 2004. If b = 10.5n, what is the value of r

1.  2.0

2.  1.9

3.  1.8

4.  1.7

4

2.0

Explanation :
No Explanation available for this question

# The total number of integer pairs (x, y) satisfying the equation x + y = xy is

1.  0

2.  1

3.  2

4.  None of the above

4

2

Explanation :
No Explanation available for this question

# Suppose n is an integer such that the sum of the digits of n is 2, and 1010< n < 1011. The number of different values for n is

1.  11

2.  10

3.  9

4.  8

4

11

Explanation :
No Explanation available for this question

# If a/b+c=b/c+a=c/a+b=r, then r cannot take any value except

1.  1/2

2.   –1

3.  1/2 or –1

4.  –1/2 or –1

4

1/2 or –1

Explanation :
No Explanation available for this question

# Let y What is the value of y

1.  √13+3/2

2.  √13-3/2

3.  √15+3/2

4.  √15-3/2

4

√15-3/2

Explanation :
No Explanation available for this question

# Two boats, traveling at 5 and 10 kms per hour, head directly towards each other. They begin at a distance of 20 kms from each other. How far apart are they (in kms) one minute before they collide

1.  112

2.  16

3.  14

4.  13

4

14

Explanation :
No Explanation available for this question

1.  130 minutes

2.  135 minutes

3.  170 minutes

4.  180 minutes

4