1.

Find the value of: 35 × 451. 15752. 16253. 15254. 16755. None of these

Answer» Correct Answer - Option 1 : 1575

Concept used :-

Trick to multiply two numbers ending in 5 with difference of 10 between them.

Method :-

  • Write 75 at the end.
  • Add 1 to ten’s place of the bigger number.
  • Now multiply the increased digit with the ten’s digit of the smaller number.
  • Write the product so obtained on the left side of 75

 

Calculation :-

Let the answer be A75.

A = (4 + 1) × 3 = 15 (using step 2 and 3)

Hence, 1575 is our answer.


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