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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