FUN WITH NUMBERS

1.  FINDING AGE
       

Pl solve this amazing maths puzzle which must have been

solved by you in high school.

Sheilla is married to Rajesh

Sheilla is 21 years older than her son Bablu.

In 6 years from now Sheilla will be 5 times as old as Bablu.

Question: Where's Rajesh?
(There is a mathematical solution for this.. Try your skills)

2. DIVIDE BY ANY NUMBER 2 TO 10 REMAINDER 1 ALWAYS

X+1= Multiples of 10
X+1= Multiples of 9
X+1= Multiples of 8
X+1= Multiples of 7
X+1= Multiples of 6
X+1= Multiples of 5
X+1= Multiples of 4
X+1= Multiples of 3
X+1= Multiples of 2

LCM of these numbers
 2x2x2 X 3x3x3 X 5 X 7 = 2520  Hence Number is  2519

3.  Chess Board . 
King Purshotama and learned Pandit , the latter asked..
   - Just one grain of rice  in first square, two grains  in second, 4 in third, 8 in the fourth square and so on up to the 64th square..
Total Number of Grains -- Two raised to the power of 64 minus 1
    Amazing               =       18446744073709551615  beyond the availability in the world.

4.  Smallest integer written with two figures.
                 yes it is 1 divided by 1. = 1

5.  Can you arrange figs 1 2 3 4 5 6 7 8 and by additions and subtractions make the total to 100
               yes   86 +2 + 4 +5 + 7 -1 - 3 = 100

6.   Write 30 using three identicle figures like 5x5+5 =30
                                        3
            6x6-6 = 30  or 3    - 3   =  30   or  33-3=30

7.  Two fathers and two sons,    
        First father gave Rs 300 to his son, The second father gave Rs 150 to his son.
         When the sons totalled the money with them it added to only Rs 300.
                      Why ????

8.