Answer / sj

Question 10:::: 64,54,42,31,20 In this series 54 is wrong


Logic:: Add 11 to numbers like this

20+11=31

31+11=42

42+11=53

53+11=64

after adding 11 to 42 we get 53 instead of 54 So 54 is not
correct ..........

Answer / less than you

Here is reply of Question (6).

Sn = N*(A+L)/2

N= Total Number of Term = 1000
A= First Number = 1
L= Last Number = 1000

Sn = 1000*(1+1000)/2
= 1000*(1001)/2
= 500*(1001)
= 500500 = Five lakh and five hundred

Answer / less than you

For web based application, the traditional way to perform
software configuration testing is to set up a lab with
multiple physical machines running different combinations
of operating systems, Web browsers and other software.

Answer / sj

8. You have been given 8 identical balls out of which one of
them is heavier. How would find the heavier ball in the
least number of tries with the help of a balance? Explain

Answer:: 1) make two group of 4 ball each
means in 1 group we have 4 balls and in 2 group we have 4 balls
2) Now check which group is heavy in weight balance means
group 1 or group 2...
3) Now split heavy group ball into 2 groups of 2 ball each
means 1 group of 2 balls and 2 group of 2 ball each..
4) Now check which group is heavy in weight balance means
group 1 or group 2... u find the heavy ball ..................

Answer / sunny

8)make groups of 3 - 3 -2
now place 3 ball sets on the balance.
if both are equal.:-then place the remaining 2 balls (on either side of the balance)
if both are not equal:- then randomly choose 2 balls out of the heavier 3 ball set.... if both are equal that means the remaining ball is the heavy one...... if both are not equal you have already found the heavier one.
SO IN ANY CASE NOT MORE THEN 2 TRAILS.

Answer / akhil

Many of the answers are explained by fellow persons some are
correct and some are partly correct.So below I m giving
explanation of other questions:-

Q.7 Total number of events= 6*6*6*6 =1296

Number of events such that same number should be on all
four dices = 6

So probability = 6/1296 = 1/216

Q.9 1 sensor is needed to detect direction of rotation of disc.

explanation:-Put sensor on anywhere on the periphery of a
disc.It will detect colour as white or black depending on on
which part u put ur sensor.Then it will detect black when
that part comes to the sensor.It will find on which
direction black part comes and thus can tell the direction
of rotation of disc.

Answer / nishant verma

Answer(8):
divide number of ball into two part 4-4.now balance them
which part is heavier take them out.now divide again into
two part 2-2 again repeat the same process till u get
heavier one

Answer / kiran

7.

Probability of getting a number on one dice is 1/6.
On Two dice = (1/6*1/6)

As there are 6 numbers on dice, its 6*(1/6* 1/6)=1/6.

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