# The age of father 10 years ago was thrice the age of his son. Ten years hence, father's age will be twice that of his son. What is the ratio of their present ages

1.  7 : 3

2.   3 : 7

3.  9 : 4

4.  4 : 9

4

7 : 3

Explanation :
No Explanation available for this question

# The product of three numbers is 1620. If the HCF of any two out of the three numbers is 3, what is their LCM

1.  180

2.  135

3.  90

4.  270

5.  288

5

180

Explanation :
No Explanation available for this question

# If the total number of ants and beetles initially is 13 and 27 respectively, then the total number of survivors after the two files completely cross each other is

1.  18

2.  19

3.  22

4.  20

5.  None of these

5

20

Explanation :
No Explanation available for this question

# If the size of the file of ants is 13, then the minimum file size of the beetles such that the casualties on either side are the same is

1.  33

2.  35

3.  32

4.  31

5.  39

5

31

Explanation :
No Explanation available for this question

# Little Euclid was playing with a cuboidal box, with a square base, and 14 identical wooden spheres. He observed that he could snugly and perfectly layer comprising three rows and three columns. He then placed another layer of four spheres, stably sphere in the second layer touched exactly four spheres of the bottom layer. Finally he placed the last sphere, stably and symmetrically, on top of the second layer and observed that he could then just close the lid of the box. Find the ratio of the height of the box to the radius of each sphere

1.  2(2√3-1)

2.  2(2√2+1)

3.   2(2√3+1)

4.  3(2√2-1)

5.  None of these

5

2(2√2+1)

Explanation :
No Explanation available for this question

# The ages of two persons differ by 16 years. 6 years ago, the elder one was 3 times as old as the younger one. What are their present ages of the elder person

1.  10

2.  20

3.  30

4.  40

4

30

Explanation :
No Explanation available for this question

# This year, during the months of January and February, every day Ramu went to a fruit shop and bought three varieties of fruits, such that when any two days are considered, he bought at least one variety of fruit on one of the days that was different from what he bought on the other day. What is the minimum number of different varieties of fruits he could have bought during that period

1.  9

2.  8

3.  18

4.  60

5.  14

5

9

Explanation :
No Explanation available for this question

# The present age of a father is 3 years more than three times the age of his son. Three years hence, father's age will be 10 years more than twice the age of the son. What is father's present age

1.  30 years

2.  31 years

3.  32 yeas

4.  33 years

4

33 years

Explanation :
No Explanation available for this question

# In a triangle ABC, AB=AC, BC=6 cm and BE and CF are the medians drawn to AC and AB respectively. If BE^CF, then find AC (in cm).

1.  3√10

2.  6√5

3.  4√10

4.  8√5

5.  Cannot be determined

5

3√10

Explanation :
No Explanation available for this question

1.   40 years

2.  38 years

3.  42 years

4.  36 years

4