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Some equations have been solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.If 14 × 2…

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Some equations have been solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
If 14 × 23 = 14, 45 × 67 = 59, then 78 × 91 = ?
  • A71
  • B96
  • C76
  • D67
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CCommunity
The pattern followed is:

The product of the digits at unit place of first and second number is added to the product of the digits at tens place of the first and second number.

(4 × 3) + (1 × 2) = 12 + 2 = 14

(5 × 7) + (4 × 6) = 35 + 24 = 59

Similarly,

(8 × 1) + (7 × 9) = 8 + 63 = 71

Hence, 71 is the correct answer.