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Chapter 1 – Matrices And Determinants Multiple Questions and Answers.
| 51. | Which one is the irrational number ? | ||
| A. | 2⁄3 | ||
| B. | √4 | ||
| C. | 3⁄5 | ||
| D. | 3⁄7 | ||
| 52. | An irrational number that contains a radical sign is known as | ||
| A. | fraction | ||
| B. | mode | ||
| C. | surd | ||
| D. | variable | ||
| 53. | A² + b² + c² + 2ab + 2bc + 2ca is equal to | ||
| A. | (a + b - c)² | ||
| B. | (a + b + c)² | ||
| C. | 2abc (a + b + c)² | ||
| D. | (a - b + c)² | ||
| 54. | A³ + 3ab(a + b) + b³ is equal to | ||
| A. | (a - b)³ | ||
| B. | (a + b)³ | ||
| C. | a³ + b³ | ||
| D. | a³ - b³ | ||
| 55. | If a + b = 5 and a - b = 3 then the value of a² + b² should be | ||
| A. | 21 | ||
| B. | 15 | ||
| C. | 17 | ||
| D. | 11 | ||
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