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Q: .
question image
  • A. 65
  • B. 40
  • C. 78
  • D. 90
Correct Answer: Option B - 21 + 23 – 46 × 23 ÷ 21 = ? On interchanging the sign (+,–) and (×,÷), 21–23+46÷23×21 = ? 21–23+42 = ? ? = 40
B. 21 + 23 – 46 × 23 ÷ 21 = ? On interchanging the sign (+,–) and (×,÷), 21–23+46÷23×21 = ? 21–23+42 = ? ? = 40

Explanations:

21 + 23 – 46 × 23 ÷ 21 = ? On interchanging the sign (+,–) and (×,÷), 21–23+46÷23×21 = ? 21–23+42 = ? ? = 40