In the reading room of a library, they are 23 reading spots. Each reading spot consists of a round table with 9 chairs placed around it. There some readers such that in each occupaid reading spot there are diffirent number of readers. If in all there are 36 readers, how many reading spots do not have even a single reader?

Shail

• Sep 4th, 2011

The key here is realizing that the tables that aren't empty each have a DIFFERENT number of readers. There's only one way to do this. The very least number of people you could have at a table is just...

Rawjesh

 Profile Answers by Rawjesh Questions by Rawjesh

• Nov 21st, 2010

AS, There are some readers such that in each occupied reading spot there are
different numbers of readers. 1+2+3+4+5+6+7+8= 36 readers so, 8 spots have
different readers. remaining are 23-8= 15. 15 spots are empty.

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There are two candles of equal lengths and of different thickness. The thicker one lasts of six hours. The thinner 2 hours less than the thicker one. Ramesh lights the two candles at the same time. When he went to bed he saw the thicker one is twice the length of the thinner one. How long ago did Ramesh light the two candles?

niyaj

 Profile Answers by niyaj Questions by niyaj

• Nov 28th, 2010

3 hours

surekhagrandhi

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• Nov 19th, 2010

 3hrs  1-h/6 = (1-h/4)2

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If A= 0 0 0 0 1 1 1 1B= 0 0 1 1 0 0 1 1C= 0 1 0 1 0 1 0 1Then find the value of [A U C] U B and express it in decimal.

sami_sharma

 Profile Answers by sami_sharma Questions by sami_sharma

• Dec 17th, 2010

Answer is 127

sami_sharma

 Profile Answers by sami_sharma Questions by sami_sharma

• Dec 17th, 2010

Answer is 123

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When you reverse the digits of age of father you will get the age of son. One year ago the age of father was twice that of son's age. What are the current ages of father and son?

ganesan4632

 Profile Answers by ganesan4632 Questions by ganesan4632

• May 21st, 2011

Current Age:Father Age should be  - 73 Yearsson age will be  - 37 Years (Reversal of Father Age)One Year Before:Father Age is 72 Years(Double of Son's age)Son Age is  - 36 Years

ananthk

 Profile Answers by ananthk Questions by ananthk

• Nov 25th, 2010

This type of qn`s done by trail and error methods. firm you have to form eq. based on given data then you have to submit values given in ans.if f=10x+y is father age then s=10y+x is son agethen f-1=2(...

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Mr. loyd wants to fence his Square shaped land of 120 Sqft each side. If a pole is laid every 12ft how many poles do he need?

lavanya.rjs

 Profile Answers by lavanya.rjs Questions by lavanya.rjs

• Jan 3rd, 2011

Area= 120 sq.ft. givenEach side= 10.954 ft.Hence a 12ft. pole cannot be fenced.

janani.ece

 Profile Answers by janani.ece Questions by janani.ece

• Dec 25th, 2010

Thirty six

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Person A can complete the job in 10 days, Person B can complete the job in20 days. If both together work then in how many days they will finish d work ?

bibzj

 Profile Answers by bibzj Questions by bibzj

• Feb 5th, 2011

13 days 8 hours

Prabhu Masilamani

 Profile Answers by Prabhu Masilamani Questions by Prabhu Masilamani

• Jan 27th, 2011

15 days

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A power unit is there by the bank of the river of 750 meters width. A cable is made from power unit to power plant opposite to that of the river and 1200mts away from the power unit. The cost of the cable below water is Rs.15/- per meter and cost of cable on the bank is Rs.12/-per meter. Find the total of laying the cablea. 15550 b. 15650 c. 16560 d. 16650 e. None of these

aishs8

 Profile Answers by aishs8 Questions by aishs8

• Jan 23rd, 2011

River width=750 mBank width=(1200-750)=450mCost of cable along river=750*15 =11250Cost of cable along bank=450*12=? 5400Total cost of cabling =11250+5400 = 16650

aishs8

 Profile Answers by aishs8 Questions by aishs8

• Jan 23rd, 2011

29 mice are required to test the cans.As the time constarint of 24 hours is mentioned, I think this is optimal.We can discard 30th can as even if one mice dies, we can find the poisoned can.

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Three numbers are selected at random without replacement from n number,what is the probability that the first number drawn will be the smallest and the second is the largest

• Dec 11th, 2011

1C1*1C(N-1)*1C(N-2)/3C(N-3)

surendrap

 Profile Answers by surendrap Questions by surendrap

• Sep 26th, 2011

(1C1.1C1.1C(n-2)) / (3C(n-3)

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There are two poles of equal height 15mts. One cable with length 16mts is hanging between that two poles. The height from center of the cable to earth is 7mts then what is the distance between that two poles?

success

• Dec 28th, 2012

No distance. because if the cable is in 7 mts above on ground means the 16 mts cable is placed up and down(8mts+8mts).

prasanta Kumar Mallick

• Mar 22nd, 2012

14mts

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The citizens of planet nigiet are 8 fingered and have thus developed their decimal system in base 8.

A certain street in nigiet contains 1000 (in base 8 buildings numbered 1 to 1000. How many 3s are used in
numbering these buildings?

The citizens of planet nigiet are 8 fingered and have thus developed their decimal system in base 8. Acertain street in nigiet contains...

KALPANA

• Feb 19th, 2015

265

Mark Haynes

 Profile Answers by Mark Haynes Questions by Mark Haynes

• Dec 28th, 2011

300 in the nigiets base 8
192 in the base 10 for us ....

the answer is total of 192 (base 10)

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A man climbing a rock at 24 km/hr and downhill 36 km/hr. Determine avg speed?

Hari

• Jun 23rd, 2014

2xy/(x+y)

shivakumar mp

• Oct 14th, 2012

2xy/xy= average speed. its very simple

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what is mean by APIPA? give me full detail of relative.

Yogesh vyas

• May 18th, 2015

APIPA means Automatic private ip assign when dhcp is not present in network that assign the ip computer APIPA range 169.254.0.1 to 169.254.255.254

vaibhav

• Feb 10th, 2015

APIPA is automatic private ip config. when system is not connected to internet or failure then APIPA provides IP to client.

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Question: 3 runs required is 3 balls to win the match only on wicket left,the batsman is on 97 and runner on 98. how will both batsman score centuries as well as win the match?

Bharat Raj

• Mar 28th, 2015

1) 3 balls left. The batsmen intentionally waste a lot of time. The umpire gives out a warning to the batting side. 2) Ball is bowled, batsman who was in strike (97*), scores a double. 2 balls left...

suresh rai

• Mar 17th, 2015

1st ball 3 runs but 1short deducted next ball 4

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A certain amount of money at X% compounded annually after two and three years becomes Rs 1440 and 1728 respectively. X is?

Sanjana Sharma

• Aug 31st, 2015

X=20

Priya

• Aug 30th, 2015

20

1728/1440=(1+x/100)

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A bundle of balloons contains 12 packets and there are 24 bundles in a box. The retail price of a packet of balloons is given by the user and calculate the price of such 5 boxes.

Sandeep Guptha

• Nov 25th, 2019

1 bundle =12 packets
24 bundles => 12*24= 288 packets
1 box = 24 bundles = 288 packets
Now, Take 1 packet = 10 rs
So 1 bundles =120 rs => 1 box =120*24 = 2880rs
5 boxes = 5* 2880 = 14400rs.

manju

• Nov 24th, 2015

1 bundle=12 packets=24 bundles
1 bundle= 12*24*1=288, 5 bundles= 5*8= 1440

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The ability of the four candles to burn, respectively, is 5h, 4hrs, 3h, and 2h, respectively, is ignited in one cell at the same time. They are lit up in the chamber until the moment the three candles are extinguished in the room. If the cost of burning each candle is 75 paisa per hour, the total expenditure will be?

Anjali

• Aug 18th, 2017

3 candles are burns means, all candles are ignited 2 hours.
total expenditure is = .75*4*2=6/-

Zac Graphite

• Jun 2nd, 2017

The candles are lit simultaneously. They burn for 4+4+3+2=13 hours (till 3 candles extinguish).
so total cost is 13*0.75 = Rs 9.75

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Find the Missing Number in 11/14- x/4=4/14

Zarina

• Mar 6th, 2018

11/14-x/4=4/14
11/14-4/14=x/4
7/14=x/4
hence x= 2

• Feb 9th, 2018

X=0.857~1

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204

sanil

• Jun 18th, 2006

for any matrix take thius formula  4*4=1^2+2^2+3^2+4^2similarly for 8*8==1^2+2^2..........+8^2=204

anshul

• Feb 23rd, 2006

We discovered that there are 204 squares on the board We found that you would add the different squares - 1 + 4 + 9 + 16+ 25 + 36 + 49 + 64.Also in 3*3 tic tac toe board what is the total no of square...

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1/3

Benit Amala

 Profile Answers by Benit Amala Questions by Benit Amala

• May 18th, 2008

Use the formula n*(n+1)*(2n+1)/6=8*9*17/6=204

Benit Amala

 Profile Answers by Benit Amala Questions by Benit Amala

• May 18th, 2008

The answer is 1

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virus

• Sep 29th, 2007

It is asking for the elapsed time which is 9-4=5 so put 5 in equation and we get 3.5Think logically we cannot get a difference of 34.5 in any casePlease correct me if I am wrong.TO ERR IS HUMAN AND TO HUMAN IS ERR

sri

• Sep 16th, 2006

Wat is -t^2/2 i dint get that

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