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Nisha Gupta • 2.32K Points
Master Reasoning 

Q. a × b = 2a - 3b + ab, then 3 × 5 + 5 × 3 = ?

  • (A) 20
  • (B) 21
  • (C) 22
  • (D) 23
Correct Answer - Option(C)
Explanation by: Nisha Gupta 
= 2(3)-3(5)+(3 × 5) + 2(5)-3(3)+(5 × 3)

= 6-15+15+10-9+15 = 31-9 = 22

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