1. A man walks 3km east then 5km north then 8km east. Now how far is he from the starting point

if u draw a rectangle of length of total(3+8) km and breadth 5km and draw a diagonal from the starting to ending point, by Pythagaros Theorem, square(hyp)=square(the both sides)

it comes to be 12.083km

2. One ship start his journey from a port and another ship start his journey from H at the same time, at which place they will meet?

The right question is:A ship started from port and moving with I mph and another ship started from L and moving with H mph. At which place these two ships meet? !_____!_____!_____!_____!_____!_____! port G H I J K L

3. Find the fourth row, having the bit pattern as an integer in an 8-bit computer, and express the answer in its decimal value.
A 0 0 0 0 1 1 1 1
B 0 0 1 1 0 0 1 1
C 0 1 0 1 0 1 0 1
(AU(B-C)) ?

B-C is bitwise addition of B and 2s compliment of C

then bitwise union of A with abover result gives the ans as 1101 1111 which

has decimal value of 223.

5. Wind flows 160 miles in 330 min, for 80 miles how much time required?

as

160 miles are covered in 330 min

1 mile will be covered in 330/160 min

Hence 80 miles will be covered in 80*330/160 =165 min.

7. For temperature a function is given according to time :((t**2)/6)+4t+12 what is the temperature rise or fall between 5PM to 8PM?

Apply t=5, ans=33.7 for t=8, ans=46.7
The differenc between the two, 46.7-33.7=13 is the answr upto my knowledge.

8. A building with height D shadow up to G. A neighbor building with what height shadows C feet. |----|----|----|----|----|----|----| A B C D E F G H

this can be solved by using the rule of cross multiplication i guess....

to get a shadow of G ft the ht of the building should be D

hence, for the shadow to be C ft, the height of the building should be CxD/G

9. 27(deg) 6 43.15

45(deg) 31 4.3
find the degrees when the time is 3o clock?

The angel between the minutes and hour hand would be 45 degree at 3'0 clock

10. What is the largest prime no. stored in 8bit/6bit/9bit/7bit memory?

2. A,B,C are the mechanisms used separately to reduce the wastage of fuel by 25%,20%,10%. What will be fuel economy if they were used combine?

for 1st machine 100-25 ie 75
for 2nd machine 100-20 ie 80
for 3rd machine its 100-10 ie 95
so efficiency in rev = (90*80*75)/10000
=54
so fuel economy =100-54
=46