In 1992 Jahan was thrice as bell but in 1996 John was only twice as old as well was. How many years was there in 2000?

Let's

In 1992.

Jahan age's =x Bell age's=Y

when John was thrice as bell.

X = 3y .......( 1)

but after 4 years jhon was twice.

X + 4 = 2 (y+4)....... (2)

By substituting equations

Y = 4

but after 8 years.

In 2000 Bell was: 12

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In following questions, one term in number series is incorrect.

Find out the incorrect number

11, 5, 20, 12, 40, 26, 74, 54

Find out the incorrect number

11, 5, 20, 12, 40, 26, 74, 54

The given sequence is a combination of two series:

I. 11, 20, 40, 74 and

II. 5, 12, 26, 54

The pattern in I becomes + 9, + 18, + 36, ... if 40 is replaced by 38.

So, 40 is wrong..

Pointing towards a person in photograph ,Lara said "He is the only son of the father of my sister's brother." How is that person related to Lara?

The relations may be analyzed as follows:

Sister's brothers _ brother

Brother's father_ father

Father's son_Brother.

So, the person in the photograph is Lara's brother .

Hence, the answer is(d).

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All the six members of a family A, B, C, D,
E and F are travelling together. B is the son of C but C is not the mother of
B, A and C are a married couple. E is the brother of C. D is the daughter of A.
F is the brother of B. How many male members are there in the family?

Option: (D)

B is the son of C but C is not the mother of B means C is the father of B. A is married to C means A is the mother of B. F is brother of B means F is son of A and C. D is daughter of A means D is daughter A and C. A is the mother and hence female. B is the son and hence male. C is the husband and hence male. D is the daughter and hence female. E is the brother and hence male. F is the son and hence male. So , there are four males.

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To train starting at the same time from two station to 50 km apart and going in opposite directions cross each other at a distance of 170 km from one to two of the station. What is the ratio of their speeds?

In same time to cover 170 km at a kilometre respectively.

For the same time speed and distance is inversely proportional.

Suresh of the speed=17:80=17:8

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(I). A, B, C, D, E and F are six members of a family.

(II). One couple has parents and their children in the family.

(III). A is the son of C and E is the daughter of A.

(IV). D is the daughter of F who is the mother of E.

Who are the male members in the family?

Option (D)

E is the daughter of A and F is the mother of E. So, A is the father of E and hence the husband of F. Now, D is the daughter of F. So, D and E are the daughters of A and F. Also, A is the son of C. Now, only B remains. Thus, B and C are the parents of A. The sex of B and C cannot be determined.

A is the brother of B. B is a brother of C. D is the father of A.Based on these three statements, which of the following statements cannot be definitely true?

A is the brother of B and B is the brother of C. So, C may be the brother or sister of A..

Magi bought seven boxes. A week later half of all her boxes were destroyed in a fire. There are now only 22 boxes left. With how many did she start?

Let's Marla have "x" boxes.

She bought 7 more: x+7

Half of them destroyed: x+7/2

Left with:

x+7/2=22

x+7=22 x 2

x+7=44

x=37

She started with 37 boxes

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