Question

without using of calculator find the square of natural numbers between 80and90.​

Answer 1

$\huge\underline\mathcal\red{Solution :-}$

81 × 81 = 6561

82 × 82 = 6724

83 × 83 = 6889

84 × 84 = 7056

85 × 85 = 7225

86 × 86 = 7396

87 × 87 = 7569

88 × 88 = 7744

89 × 89 = 7921

90 × 90 = 8100

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