Vishwanath
Saturday, February 16, 2013
28. | If 2 * 3 = √12 and 3 * 4 = 5, then the value of 5 * 12 is |
| A. 13 | B. 15 | |
| C. 18 | D. 21 | |
Answer:
Clearly, a * b | = √a2 + b2. |
Therefore, 5 * 12 | = √52 + 122 |
‹=› √25 + 144 |
‹=› √169 |
‹=› 13. |
Title : Square Roots And Cube Roots Q28
Description : 28. If 2 * 3 = √ 12 and 3 * 4 = 5, then the value of 5 * 12 is A. 13 B. 15 C. 18 D. 21 Answer: Clearly, a * b = √ a 2 + b 2 . There...
Rating : 5
