1.

9*9+9-9÷9*9

Answer» Yogita there is a mistake in that answer...81+9-9=90-9=81....use bodmas
9 × 9 + 9 - 9 ÷9 ×9= 9 × 9 + 9 - 1×9= 9 × 9 + 9 - 9= 81 + 9 - 9= 81 + 0= 81
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