4,9,16,25,36,49,64,81
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The square numbers between 40 and 90 are: 49, 64, 81. This is because 7 squared = 49. 8 sqd. = 64. 9 sqd. = 81.
64 and 81 are squares of whole numbers. 64 is the square of 8 (8x8=64) and 81 is the square of 9 (9x9=81).
151
64, 81, 100, 121, 144, 169, 196.
The square numbers between 50 and 100 are 64 (82) and 81 (92).If the number 100 is included then 100 is 102.64, 81,