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This page contains the most recently asked technical questions and answers in the National Public School.

All of the questions listed below were collected by students recently placed at National Public School.

**Ques:- January 7, 1992 was Tuesday. Find the day of the week on the same date after 5 years, i.e., on January 7, 1997?**

**Ques:- Find out the wrong number in each sequence:**

1, 8, 27, 64, 124, 216, 343

1, 8, 27, 64, 124, 216, 343

**Recent Answer**: :

Answer is 124 because in this series is cube root sequence 2 cube root is 8 ,3 cube root is 24,4 cube root is 64, 5 cube root is 125 but there is 124 which is wrong ,6 cube root is 216 ,7 cube root is 343 .

**Ques:- Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to that group?**

**Recent Answer**: :

Cooking

**Ques:- A husband and wife has a combined age of 91.the husband is now twice as old as his wife was when he was as old as she is now. How old are they?**

**Recent Answer**: :

ans is C.

let H be present age of husaband.W be present age of wife.

H+W=91.

now let diff between their ages be x.that is H-W=x.

now when husband is W yaers old, his wife must be W-x years

old.and it is given that H=2(W-x). so 2W-H=2x. and H-

W=x.eliminating x we get 4W=3H. but H+W=91, so solving thse

two H=52 W=39.

**Ques:- There are 5 burglars and once went to a bakery to rob it obviously The first guy ate 1/2 of the total bread and 1/2 of the bread. The second guy ate 1/2 of the remaining and 1/2 of the bread. The third guy ,fourth guy and fifth guy did the same. After fifth guy there is no bread left out. How many bread are there?**

**Recent Answer**: :

let the total no of breads be x.

1st man 2nd man

x- (x/2) – 1/2 – 1/2((x-1)/2) – 1/2 ….. so on.

ans is 31.

first ate : 15.5 + .5 = 16 remaining 15

second ate : 7.5+0.5 = 8 remaining 7.

third ate : 3.5 +0.5 = 4 remaining 3.

fourth ate : 1.5 + 0.5 = 2 remaining 1

fifth ate : 0.5 + 0.5 = 1 remaining 0

**Ques:- The positions of the first and the fifth digit in the number 93264187 are interchanged. Similarly, the positions of the second and the sixth digits are inter changed and so on. Which of the following will be the third digit from the right end after the rearrangement?**

**Recent Answer**: :

The Answer is 3

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**Ques:- Radius of sphere is increased by 50%. By how much percentage is surface area is increased?**

**Recent Answer**: :

let original radius=100

original surface area lets say it x =4 * (22/7) * 100 *100

new radius=100 + 50% of 100=150

new surface area lets say it y = 4 * (22/7)* 150* 150

increase in surface area=((y-x)/x) * 100

i.e.

((4*(22/7)*150*150 – 4*(22/7)*100 *100) / (4*(22/7)*100*100))*100

=125

so the answer is 125%.

hope this helps you.

**Ques:- An escalator is descending at constant speed. A walks down and takes 50 steps to reach the bottom. B runs down and takes 90 steps in the same time as A takes 10 steps. How many steps are visible when the escalator is not operating.Â**

**Ques:- Verbal, logical reasoning, numerical ability.**

**Ques:- What made me think about joining the social sector?**

**Ques:- Asked about experience**

**Ques:- Why do you expect this much salary?**

**Ques:- A bag contains equal number of Rs.5, Rs.2 and Re.1 coins. If the total amount in the bag is Rs.1152, find the number of coins of each kind?**

**Recent Answer**: :

144

**Ques:- The ratio between the radii of two spheres is 1:3. Find the ratio between their volumes?**

**Ques:- The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?**

**Ques:- Two pipes X and Y together can fill a cistern in 4 hours. Had they been opened separately, then Y would have taken 6 hours more than X to fill cistern. How much time will be taken by X to fill the cistern separately?**

**Ques:- If BOMBAY is written as MYMYMY, how will TAMIL NADU be written in that code ?**

**Ques:- A train passes a station platform in 36 sec and a man standing on the platform in 20 sec. If the speed of the train is 54 km/hr. What is the length of the platform?**

**Recent Answer**: :

240 m

**Ques:- Find the least number which when divided by 35 and 11 leaves a remainder of 1 in each case.**

Recent Answer: Added by S.kowsalya On 2022-05-17 09:08:19:Tuesday