1 |
In decimal system base of system is: |
2
5
8
10
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2 |
2 x 10 + 3 x 10o =. |
23
24
25
26
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3 |
A square matrix whose elements below the main diagonal are all zero is called. |
Upper triangular matrix
Lower triangular matrix
Rectangular
Row matrix
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4 |
A + 0 is equal to: |
0
A
O + A
None of these
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5 |
If Ax = B then x is |
BA<sup>-1</sup>
AB
B/A
A<sup>-1</sup> B
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6 |
I3 x | I3 | = ? |
I<sub>3</sub>
0
1
None of these
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7 |
If A = [aij], then A+ is : |
[aij]
[bji]
[aji]
[aii]
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8 |
Do AB = BA? |
Never
Yes
May or may not
None of these
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9 |
Do (A + B) + C = A + (B + C)? |
No
Yes
May or may not
Never
|
10 |
If A is a singular matrix then: |
A = 0
|A| = 0
A ≠ 0
|A| ≠ 0
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11 |
Any matrix "A" is a symmetric matrix if: |
A = -A
A = A<sup>t</sup>
A = -A<sup>t</sup>
A = A<sup>-t</sup>
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12 |
Order of the matrix having m rows and n columns is: |
m + n
m - n
m / n
m x n
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13 |
Formula to calculate compounded amount is: |
P(1 + i)<sup>n</sup>
P(1 + i)<sup>-n</sup>
R (1 + i)
P (1 - i)<sup>n</sup>
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14 |
90.5% in common fraction: |
0.9
10/9
9/10
181/200
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15 |
1 : 3 is same as: |
3 to 1
3 : 8
1 to 3
None of the above
|