What will come in place of the question mark (?) in the following equation if '+' and '÷'are interchanged and 'x' and '-' are interchanged? 3÷4-5×6+2=?
Given the equation: 3 ÷ 4 - 5 × 6 + 2 = ?
We are asked to interchange '+' and '÷' and also '×' and '-'. This means we replace every '+' with '÷', every '÷' with '+', every '×' with '-', and every '-' with '×'.
Applying these changes to the equation, we get:
3 + 4 × 5 - 6 ÷ 2 = ?
Now, we solve this equation using the order of operations (BODMAS/PEMDAS): Brackets, Orders (exponents, roots), Division and Multiplication (from left to right), Addition and Subtraction (from left to right).
1. Multiplication and Division (from left to right):
- 4 × 5 = 20
- 6 ÷ 2 = 3
The equation becomes:
3 + 20 - 3 = ?
2. Addition and Subtraction (from left to right):
- 3 + 20 = 23
- 23 - 3 = 20
Therefore, the solution to the modified equation is 20.
Similar Questions
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Important Questions from Mathematical Operations
Select the set, from the given options, in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
(6, 13, 78)
(5, 22, 110)
If + means -, - means ×, × means ÷, ÷ means +, then what will come in place of the question mark (?) in the following equation?
28 - 6 ÷ 4 + 14 × 14 = ?
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Which numbers should replace X and Y so that the pattern followed by the two numbers on the left side of :: is the same as that on the right side of :: ?
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 Operations on 13 such as adding/subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
X : 649 :: 956 : Y
Which two numbers should be interchanged to make the given equation correct?
75 ÷ 5 + 15 × 4 - 17 × 3 + (60 ÷ 6) × 10 = 100
(Note: Interchange should be done of the entire number and not individual digits of a given number.)
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