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How many children on school ground ?

May 3, 2015 by Dilip Lalwani Leave a Comment

There are some children on a school ground, a square has been drawn and all children are standing on a squares four lines, they are standing with same distance, four children are standing on a four corners. No 16 Is exactly opposite of No 6. How many children are there?

How many childer in school ground

Check your answer:-

Tried enough already?

Assuming there are x children in every side of the square, thus a total of 4x -4 children will be there(not counting corner child twice).

Now we know there are atleast 16 children, thus 4x-4 >= 16. x >= 5

Lets assume first child is sitting on bottom left corner, than assume three cases

Case 1: x = 5

then 6th child will be standing on second position in second line of square, thus the exactly opposite child will be sitting on x + x-2 + x + x-1 = 4x-3th position, i.e. 17th position.

Which is not the case as per the question, thus x can’t be 5

Case 2: x = 6

then 6th child is sitting on the corner(point B), thus exactly opposite child is on x + x-2 + x= 3x-2th position, i.e. 16th.

Thus it satisfies all conditions of the question.

Thus there are a total of 4x-4, i.e. 20 children in this case.

Case 3: x > 6

then 6th child is standing somewhere in the bottom line (point A), as per this exactly opposite child will be standing at position x + x-2 + x -6 = 3x – 8

for 3x-8 = 16 => x = 24/3 = 8

Thus there are a total of 4x-4 = 28 children in this case.

 

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Find world cup 2015 players name from hint

March 10, 2015 by Dilip Lalwani 4 Comments

Guess 2015 world cup Cricketers names
1 more bananas
2 dress maker
3 westindies doctor
4 indian city
5 brother of bulb
6 living in house
7 name of tata
8 khatta fruit
9 gun
10 office servent
11 indian cotton mill
12 baby soap
13 hollywood brothers
14 weighing machine
15 see in temple
16 bank cashier

[Read more…]

Checkout more Aive hi Puzzles Tags: Solved Puzzles

How many 0’s between 1 to 200

March 9, 2015 by Dilip Lalwani 8 Comments

How many 0’s are present in numbers from 1 to 200 ?

(including both)

Check your answer:-

Tried enough already?
Click here to See SolutionHide
One zero after every 10 numbers, thus 20 + 10 extra (for 100’s series, 100, 101 to 109) + 1 extra for 200
Thus total number of zeros between 1 to 200 are 31.

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