Find the output.

main()
{
int i=-1;
+i;
printf("i = %d, +i = %d \n",i,+i);
}
what's the output??

Answer: 
i = -1, +i = -1

Explanation: 
   Unary + is the only dummy operator in C. Where-ever it comes you can
just ignore it just because it has no effect in the expressions (hence the
name dummy operator).

What is the relation?

A father is 4 times his son's age. And in 30 years son's age will be half of his father's age. How old are the father and son now???

Answer: 
Son's age : 15
Father's age : 60


Explanation:
The ratio of the father and son's age is now 4 to 1 and 30 years from now it will be 2 to 1. The period of thirty years equals the difference of the two ratios or 2 to 1. Therefore, 30*2 = 60, the father's age and (1/2) * 30 = 15, the son's age.

Find out no. of days.

A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in??

Answer:

45	(or)22	1	days.
2		2

Explanation:

Ratio of times taken by A and B = 1 : 3.

The time difference is (3 - 1) 2 days while B take 3 days and A takes 1 day.

If difference of time is 2 days, B takes 3 days.

If difference of time is 60 days, B takes		3	x 60		= 90 days.
		2

So, A takes 30 days to do the work.

A's 1 day's work =	1
	30

B's 1 day's work =	1
	90

(A + B)'s 1 day's work =		1	+	1		=	4	=	2
		30		90			90		45

A and B together can do the work in	45	= 22	1	days.
	2		2

What is the journey length?

A train travels at an average speed of 40kmph to reach its destination. But at d speed of 35kmph it reaches 15min late. wat's the journey length?

Answer: 
70km

What is the relation?

A girl introduces a boy that he is my father's mother's son-in-law's son. How the girl related to the boy?

Answer: 
Cousin

Find out the next no.

Try this...
9 = 4, 21 = 9, 22 = 9, 24 = 10, 8 = 5, 7 = 5, 99 = 10, 100 = 7, 16 = ?, 17 = ?


Answer:   
16 = 7
17 = 9


Explanation:
The numbers on the right hand side signifies the number of letters in the spelling of the numbers on the left hand.
Eg: 16(Sixteen) = 7
      17(Seventeen) = 9

How many times will it flash??

If a light flashes every 6 seconds, how many times will it flash in 3/4of an hour?

Answer: 

451 times.

Explanation:

There are 60 minutes in an hour.

            In ¾ of an hour there are (60 * ¾) minutes  = 45 minutes.

                        In ¾ of an hour there are (60 * 45) seconds = 2700 seconds.

            Light flashed for every 6 seconds.

                        In 2700 seconds 2700/6 = 450 times.

The count start after the first flash, the light will flashes 451 times in ¾ of an hour.

Who was the second?

5 boys were climbing a hill. J was following H. R was just ahead of G. K was between G & H. They were climbing up in a column.Who was the second?

Answer:

G.

            Explanation:

            The order in which they are climbing is R – G – K – H – J    

What is the relation?

Introducing a boy, a girl said, "He is the son of the daughter of the father of my uncle." How is the boy related to the girl?

Answer:Brother
Explanation:
The father of the boy's uncle → the grandfather of the boy and daughter of the grandfather → sister of father.

How many times do the hands of a clock coincide in a day?

How many times do the hands of a clock coincide in a day?

Answer:
22

Explanation:
The hands of a clock coincide 11 times in every 12 hours (Since between 11 and 1, they coincide only once, i.e., at 12 o'clock).
AM
12:00
1:05
2:11
3:16
4:22
5:27
6:33
7:38
8:44
9:49
10:55


PM
12:00
1:05
2:11
3:16
4:22
5:27
6:33
7:38
8:44
9:49
10:55

The hands overlap about every 65 minutes, not every 60 minutes.
The hands coincide 22 times in a day.