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The lattice shown is continued for 100 rows. What will be the third number in the 100th row?

 

                          Row 1:   1   2    3    4    5    6    7
                          Row 2:   8   9   10   11   12   13   14
                          Row 3:  15   16   17   18   19   20   21
                          Row 4:   22    23    24    25    26    27    28

 May 24, 2019
 #1
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The final number in Row N  =  7N

 

So....the final number in Row 99  =  7(99)  = 693

 

So....the third number in Row 100  =  693 + 3  = 696

 

cool cool cool

 May 24, 2019

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