[{"id":59397,"question":"In decimal system base of system is:","choices":[{"text":"2","value":"A"},{"text":"5","value":"B"},{"text":"8","value":"C"},{"text":"10","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":59395,"question":"2 x 10 + 3 x 10<sup>o</sup> =.","choices":[{"text":"23","value":"A"},{"text":"24","value":"B"},{"text":"25","value":"C"},{"text":"26","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":59394,"question":"A square matrix whose elements below the main diagonal are all zero is called.","choices":[{"text":"Upper triangular matrix","value":"A"},{"text":"Lower triangular matrix","value":"B"},{"text":"Rectangular","value":"C"},{"text":"Row matrix","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":59392,"question":"A + 0 is equal to:","choices":[{"text":"0","value":"A"},{"text":"A","value":"B"},{"text":"O + A","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":59390,"question":"If Ax = B then x is","choices":[{"text":"BA<sup>-1</sup>","value":"A"},{"text":"AB","value":"B"},{"text":"B/A","value":"C"},{"text":"A<sup>-1</sup> B","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":59389,"question":"I3 x | I<sub>3</sub> | = ?","choices":[{"text":"I<sub>3</sub>","value":"A"},{"text":"0","value":"B"},{"text":"1","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":59387,"question":"If A = [aij], then A+ is :","choices":[{"text":"[aij]","value":"A"},{"text":"[bji]","value":"B"},{"text":"[aji]","value":"C"},{"text":"[aii]","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":59386,"question":"Do AB = BA?","choices":[{"text":"Never","value":"A"},{"text":"Yes","value":"B"},{"text":"May or may not","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":59385,"question":"Do (A + B) + C = A + (B + C)?","choices":[{"text":"No","value":"A"},{"text":"Yes","value":"B"},{"text":"May or may not","value":"C"},{"text":"Never","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":59383,"question":"If A is &nbsp;a singular matrix then:","choices":[{"text":"A = 0","value":"A"},{"text":"|A| = 0","value":"B"},{"text":"A&nbsp;≠ 0","value":"C"},{"text":"|A|&nbsp;≠ 0","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":59382,"question":"Any matrix \"A\" is a symmetric matrix if:","choices":[{"text":"A = -A","value":"A"},{"text":"A = A<sup>t</sup>","value":"B"},{"text":"A = -A<sup>t</sup>","value":"C"},{"text":"A = A<sup>-t</sup>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":59380,"question":"Order of the matrix having m rows and n columns is:","choices":[{"text":"m + n","value":"A"},{"text":"m - n","value":"B"},{"text":"m / n","value":"C"},{"text":"m x n","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":59378,"question":"Formula to calculate compounded amount is:","choices":[{"text":"P(1 + i)<sup>n</sup>","value":"A"},{"text":"P(1 + i)<sup>-n</sup>","value":"B"},{"text":"R (1 + i)","value":"C"},{"text":"P (1 - i)<sup>n</sup>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":59376,"question":"90.5% in common fraction:","choices":[{"text":"0.9","value":"A"},{"text":"10/9","value":"B"},{"text":"9/10","value":"C"},{"text":"181/200","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":59373,"question":"1 : 3 is same as:","choices":[{"text":"3 to 1","value":"A"},{"text":"3 : 8","value":"B"},{"text":"1 to 3","value":"C"},{"text":"None of the above","value":"D"},{"value":"E"}],"correctAnswer":3}]