Look at this series: 22, 21, 23, 22, 24, 23, . . .

What number should come next?

What number should come next?

In this simple alternating subtraction and addition series;

1 is subtracted, then 2 is added, and so on.

Rule = (first number - 1), (second number + 2), (third number - 1), (fourth number + 2)....

Now The series is 22, 21, 23, 22, 24, 23, . .

(22 - 1 = 21), (21 + 2 = 23), (23 - 1 = 22), (22 + 2 = 24), (24 - 1 = 23), (23 + 2 = 25)...

So the answer is 25..

A group of workers can do a piece of work in 24 days however as 6 of them were absent it took 30 days to complete the work how many people actually worked on the job to complete it?

Let X workers are required to complete the job.

As workers and days are inversely proportional to each other so

(X-6)/x=24/30

30x-180=24x

6x=180

X=30

A is the father of C. But C is not his son.

E is the daughter of C. F is the spouse of A.

B is the brother of C.D is the son of B.

G is a spouse B. H is a father of G.

Who is the grandmother of D?

D is the son of B, B is a brother of C and A is a father of C. This means that B is the father of D and A is the father of B.

So, A is the grandfather of D. Now ,F is the spouse of A. So, F is the grandmother of D.

.
All the six members A,B,C,D,Eand F of the family are travelling together.B is the son of C but C is not the mother of B. A and C are married couple . E is the brother of C. D is daughter of A .F is the brother of B . Which of the following is a pair of females.

B is the son of 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 the brother of B means F is son of A and C .D is daughter of A means D is daughter of A means D is daughter A and C. Clearly, the females are mother A and daughter D..

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

Find out the incorrect number

445, 221, 109, 46, 25, 11, 4

Find out the incorrect number

445, 221, 109, 46, 25, 11, 4

3 is subtracted from each number and the result is divided by 2 to obtain the next number of the series.

So , 46 is wrong and must be replaced by 109 - 3 / 2 i.e. 53..

There are two trains move towards Each Other 50 km per hour and 60 km per hour respectively. When they meet it is noted that faster train cover 50 km more than the other. Find the total distance travelled by them?

First train cover 10 kilometre more in every hour so for 50 km it has to run in 5 hour.

D=(50+60)*5=550km

.