यदि चिन्हों ‘-’ और ‘×’ तथा ‘7’ और ‘3’ को परस्पर बदल दें तो निम्न विकल्पों में से कौन सा विकल्प सही है –
If the symbols '-' and '×' and '7' and '3' are interchanged, then which of the following options is correct –

  • 1

    20 × 1 – 7 = 3

  • 2

    1 × 20 – 7 = 20

  • 3

    3 – 7 × 1 = 20

  • 4

    20 – 3 × 1 = 7

Answer:- 3

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