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Question

some of the equations are provided below with symbols and mathematical relations you have to check which of the following combination is correct

If A ✚ B = (A × B) - (A + B), what is 6 ✚ 3?

The correct answer is

9

9 is correct.

The symbol ✚ is a new operation defined as \(A ✚ B = (A \times B) - (A + B)\), where + inside the brackets is ordinary addition.

Put A = 6 and B = 3: \(6 \times 3 = 18\) and \(6 + 3 = 9\).

\(6 ✚ 3 = 18 - 9 = 9\).

The symbol therefore does not mean ordinary addition here; reading it as plain addition would wrongly give 6 + 3. The defined rule must be applied exactly as stated.

Hence, the value is 9.

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Similar Questions

  1. Which two signs should be interchanged to make the given equation correct? 

    306 ÷ 17 + 4 - 50 × 8 = 30

  2. If + means -, ÷ means +, - means ×, and × means ÷ then, what is (80 ÷ 10 - 5) × 4 + 20?

  3. If 'M' means subtraction, 'N' means division, 'O' means addition, and 'P' means multiplication, then which of the following expressions equals 48?

  4. If + means -, ÷ means +, - means ×, and × means ÷ then, what is 20 ÷ 10 - 5 + 15?

  5. If 4 @ 2 = 6 and 5 @ 3 = 8, what is 6 @ 4?

  6. If 6 * 2 = 12 and 3 * 4 = 12, what is 5 * 3?

  7. If

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    A * B = A + 2B,

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    5 # 3 @ 2 * 4?

  8. If 1 = 1, 2 = 4, 3 = 9, then 4 = ?

  9. If % = divided by,
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Important Questions from Arithmetical Reasoning

  1. At present, the ratio between the ages of Arun and Deepak is 4:3. After 6 years, Arun's age will be 26 years. What is the age of Deepak at present?

  2. A man is engaged for planting trees for 10 hours. He plants 10 trees in an hour. He takes rest for 30 minutes after every hour. How many trees does he plant in 10 hours?

  3. Select the number that will come in the place of the question mark (?), if ‘+’ and ‘-’ are interchanged and ‘x’ and ‘÷’ are interchanged. 

    11 × 8 ÷ 5 + 30 − 50 = ?

  4. Which two signs should be interchanged to make the following equation correct? 

    139 + 40 ÷ 5 - 168 × 3 = 283

  5. Which two numbers (not digits) should be interchanged to make the given equation correct? 

    15 + 5 × 8 - 72 ÷ 4 + 16 × 3 = 101

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