Saturday, 28 September 2013

number pairs

Consider the pair of numbers (28,168) and (26,132).If you divide the product of two numbers in any pair by the sum of those two numbers, you will get the same result in in each case.
Take the first pair (28,168). Product = 28 x 168 = 4704.Sum = 28 + 168 = 196.
                                           Product /Sum =4704/196 =24.
Take the second pair (26,312). Product = 26 x 312 =8112. Sum =26 + 312 = 338.
                                                Product/Sum =8112/338 = 24.

We get same result  24 in both the cases.Now, can you suggest any other pair of numbers so that product of two numbers when divided by the sum of two numbers leaves 24 as answer?

Tuesday, 24 September 2013

Sudoku Mania: Diagonal Sudoku 2013 - 4

Sudoku Mania: Diagonal Sudoku 2013 - 4: Todays puzzle for the daily league is a Diagonal Sudoku. Rules of Classic Sudoku apply. Additionally digits do not repeat on the two main...

Saturday, 21 September 2013

Sudoku Mania: Solving Technique for Magic Square Sudoku

Sudoku Mania: Solving Technique for Magic Square Sudoku: Today we will look at the solving technique for Magic Square Sudoku. Now we know that all the 9 centers of the 3x3 boxes add upto 15 row wis...

Saturday, 14 September 2013

perfect square number

A,B,C and D represents four different digits. Find the values A,B,C and D if each of  5AABBCCAA
and AABBDDCC5 is a perfect square number.

Saturday, 7 September 2013

smallest number 4

Find the smallest number which when divided by 6183,5724 and 7812                                               leaves    3816,4275 and 2187 respectively as remainders.