Test: Mathematical Operations - 2 - CUET Commerce MCQ

• First, perform the division: 5068 / 28.
• Estimate by dividing: 5000/30=166.67(approximation for quicker calculation)
• Exact division: 5068 / 28 = 181.
• Next, multiply the result by 4: 181 x 4 = 724.
• Therefore, the correct answer is A: 724.

Let the number of buffaloes be x and number of ducks be y.
Now, number of heads = x + y
Number of legs = 4x + 2y  .......(1) 
But given that legs = 2(x + y) + 24 ......(2)
solving (1) & (2),we get
4x + 2y = 2x + 2y + 24 
--> x = 12.
Therefore number of buffaloes =12

In an algebraic expression, like terms are terms that contain the same variables raised to the same powers. Calculating x-squared plus x-squared is a matter of combining like terms. 

Now x² + x² = 2x²

Hence, x-squared plus x-squared is equal to 2 times x squared.

On interchanging - and /, we get the equation as

5 + 3 x 8 / 12 - 4 = 3

or 5 + 3 x (2/3) - 4 = 3

or 3 = 3, which is true.