Answer Posted / vishwajeet

a) bangladesh

There are 1000 doors that are of the open-close type. When a person opens the door he closes it and then opens the other. When the first person goes he opens-closes the doors ion the multiples of 1 i.e., he opens and closes all the doors. When the second goes he opens and closes the doors 2, 4 6 8 rely. Similarly when the third one goes he does this for 3 6 9 12 15th doors rely. Find number of doors that are open at last.

1429

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in a single throw of dice ,the chance of throwing a total of 3 is

1227

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if on a salary s per month, a tax of x% of the salary and another of r% of the salary is deducted what is the income.

1153

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f(X)= 2X-1 + f(X-1) if X is not equal to zeroandiff(X=0)=0, If f(X)= f(X-1)+f(X-2) for X>1 then X= ?

1213

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Express 16 m/s into Km/hr

1313

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What is the 12th term of the series 2, 5, 8, ....

1336

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How many different 9 digit numbers can be formed from the number 223355888 by re-arranging its digits so that the odd digits occupy even position?

1338

---

complete the series: x y z u v w r s t __

1848

---

X2 – (A-3)X +(A+3) = 0 for what value of A the sum of square of roots will be least ?

1239

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The square of a two digit number is divided by half the number. After 36 is added to the quotient, this sum is then divided by 2. The digits of the resulting number are the same as those in the original number, but they are in reverse order. The ten's place of the original number is equal to twice the difference between its digits. What is the number?

1361

---

Reversing the digits of father's age we get son's age. One year ago father was twice in age of that of his son? find their current ages?

1522

---

A person travels 6km towards west, then travels 5km towards north ,then finally travels 6km towards west. Where is he with respect to his starting position?

1376

---

what is the number whose reminder is 2 after dividing 5and also reminder is 4 after deviding 7 and reminder is 6 after deviding 9?

2265

---

A man buys 12 lts of liquid which contains 20% of the liquid and the rest is water. He then mixes it with 10 lts of another mixture with 30% of liquid.What is the % of water in the new mixture?

1408

---

Argentina had football team of 22 player of which captain is from Brazilian team and goalki from European team. For remaining player they have picked 6 from Argentinean and 14 from European. Now for a team of 11 they must have goalki and captain so out of 9 now they plan to select 3 from Argentinean and 6 from European. Find out no. Of methods available for it

1323

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