Birthdays for twins

Here is a puzzle for you-
A mother gives birth to two boys as twins.
The younger twin should normaly celebrate his birthday later than his older twin brother.
In a prticular case however the younger twin celebrates it earlier.
How is it possible?

Filling up of a sequence-2

This is with reference to my earlier blog-same title.
In spite of my hint that the solution is in the question itself nobody has responded.
The question was-'Anybody willing to work out the next two numbers in the sequence below?'
You have to look at the number of alphabets in each word in the sentence above forming the question
The numbers of alphabets in successive words are 7,7,2,4,3,3,4,3,7,2,3.The last two words viz 'sequence' and 'below' contain 8 and 5 alphabets respectively and thus these two numbers 8 and 5 are the numbers filling up the sequence .

One set of faulty coins-2

This is a rejoinder to my earlier blog of same title.
A correct reply has already been given by Shekar which may be seen under the comment portion.
The reply holds good if the weighing machine is capable to weigh correctly  upto the weight of around 55 coins.Suppose it is capable to weigh correctly upto the weight of say around 45,46 etc of coins.In that case you must take no coins from one set,which you can mark.If all coins weigh correctly the total weight should be that of 45 coins,(45 being the sum of digits 1 to 9) and so the actual weight differring from weight of 45 coins will show you which set has the faulty coins.  

How to assign tasks-rejoinder

This is with reference to my earlier blog regarding the assignment of 6 tasks to 6 persons
Task 2 can be assigned only to either person 3 or 4..
As task 1 cannot be assigned to either person 1 or 2,it could be assigned to either persons 3,5,6 or 4,5,6 depending on 4 or 3 being assigned task 2-So Tasks 1 and 2 can be assigned only in 6 ways viz 4/3,4/5,4/6,3/4,3/5,3/6.
The remaining 4 tasks can be assigned in 4! or 24 ways
Thus the total number of ways in assigning the 6 tasks is 6*24=144 ways.  

Nomination for liebster blog awards

Thank you,Aparna for nominating me for the liebster award.
The following are  the answers to your questions
1)I would like to see all teachers respected by their students
2)I was in need of help for having  a darshan in a temple and someone not known to me helped me by leading me with his hands.
3)My keen interest in mathematics
4)Variety is not confusing if looked at properly
5)We must avoid attending to some other job like speaking on phone etc
6)Thanking
7)To age without suffering any illness
8)Every person must readily help others needing it
9)Eat well,work well and forget all problems
10)Globalised  .
As per the procedures generally  followed I have nominated the following 5 persons for the Liebster Blog awards.-
1)rajirules.blogspot. in
2)mind your decisions.com/blog
3)bhargavbalakrishnan.blogspot.in
4)Insane by thoughts and human by living
5)http://anushankar.blogspot.in
I wish to raise the following questions-
1)What will you do if you are alone in a lonely island
2)What happens when an aircraft loses fuel
3)Can you find anything special about the word 'undergrounder'
4)Will you count zero as an odd or even number
5)Do you like astrology
6)Which sea is colder-Arctic or Antarctic
7)Can a day have more than 24 hrs
8)Out of geography,physics,mathematics or history which do you like most
9)Is it possible to have a meteorite crash without serious damage to persons,buildings etc
10)Out of the following which would you not like to miss-a music concert,a cricket match ,a tv serial or the uptodate news from media
I introduce myself as a honours graduate in physics ,now retired from several jobs including a stint in Libya,having interest in music,mathematics and acquaintance with words in english language.
I will be intimating the persons whom I have nominated to follow this up further by nominating  other bloggers known to them and communicate their responses to my questions-the first coming to their mind.

Movement of digits

 Consider the number shown below-
523814769
This number consists of each of the nine digits from 1 to 9 without any repetition and it is a perfect square..
You are required to convert it to 123456789 by movement of digits from one place to another by interchange.
For example by interchanging 5 and 6 from 523814769 you get 623814759.This is considered as one movement.
You are allowed 3 movements for conversion of 523814769 into 123456789.
Proceed.

Alphabet/number link

The following is an addition sum where each alphabet represents a distinct digit from among the 10 digits from 0 to 9-
    S  E  N  D
    M O  R  E
 -----------
M O N  E  Y
Find the actual addition sum as per those digits.