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    NUMBER PYRAMID

                     In a number pyramid, the number in each space is                                   9

                     the sum of the two numbers below it.                                            5      4

                       Start with a space, which has two filled adjoining
                       spaces below it.                                                           3      2     2
                        Here  blue circle is the sum of two  green circles.                    2      1     1     1
                       Therefore, blue circle is 2 + 1 = 3.
                        We can get the remaining numbers by following the same pattern.

                               NUMBER GRID

                     In a number grid each grid is replaced by the value of its result. Let us start filling
                     the numbers in the grid by solving each grid.
                       We usually start with the number at the centre. Here, it is 30.

                                              10 less
                                              than 30

                                                          1 more
                                   1 less                  than
                                 than 30      10+20         30                             30

                                             10 more
                                             than 30

                        Now, fill the remaining places in the grid according to the instruction given in
                       each box.

                               SECRET MESSAGE: DECODING

                     Decoding  is  the  process  of  converting  a  hidden  message  to  a  meaningful

                     text. The hidden message or secret message can be in the form of a symbol,

                     number, picture, letter, or a pattern.

                     For example,  if                1             2             3   then  the  secret  message

                                            will be decoded as 132112.

                                                                                                Reasoning and Analysis  77

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