What is the value of the following? \frac{(5\cdot4)^3-0\cdot064}{(5\cdot4)^2+2\cdot16+0\cdot16}
- A. 4
- B. 4.4
- C. 5 ✓
- D. 5.4
Correct Answer: C. 5
Explanation
The expression matches the identity \frac{a^3 - b^3}{a^2 + ab + b^2} = a - b, where a = 5.4 and b = 0.4 (as 0.4^3 = 0.064 and 0.4^2 = 0.16). The result is 5.4 - 0.4 = 5.
Related questions on Arithmetic
- What is the remainder when (17^{25} + 19^{25}) is divided by 18?
- A bottle contains spirit and water in the ratio 1:4 and another identical bottle contains spirit and water in the ratio 4:1. In what rat...
- Let P = 5^5 \times 15^{15} \times 25^{25} \times 35^{35} and Q = 10^{10} \times 20^{20} \times 30^{30} \times 40^{40}. What is the numbe...
- Two students X and Y appeared in a test. The score of X is 20 more than that of Y. If the score of X is 75% of the sum of the scores of X an...
- Question: The product of a natural number N and the number M written by the same digits of N in the reverse order is 252. What is the number...