The next number is 48.
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100, 90, 81, 73, 66, 60, 55 It's a decreasing sequence 100-10=90 90-9=81 81-8=73 73-7=66 66-6=60 60-5=55
100, 90, 81, 73, 66, 60, 55 It's a decreasing sequence 100-10=90 90-9=81 81-8=73 73-7=66 66-6=60 60-5=55
25, 36, 49, 64, 81, 100...
This is called "square" sequence.144 = 122121 = 11264 = 8249 = 72Thus the missing numbers are 92 and 102 which are 81 and 100
100 - 19 = 81.