-
A. 4
-
B. None of these
-
C. 2
-
D. 3
Explanation
The square root of 256 is 16, which has 2 digits.
Counting the digits in 16 confirms that the answer is 2.
-
A. 13
-
B. 15
-
C. None of these
-
D. 11
Explanation
- √2197 = 13, since 13 × 13 × 13 = 2197.
- It is the cube root of 2197, making 13 the correct square root as well.
-
A. None of these
-
B. 8
-
C. 6
-
D. 7
Explanation
294 × 6 = 1764 = 42²
-
A. None of these
-
B. 66
-
C. 72
-
D. 78
Explanation
To evaluate √6048: 6048 = 78 × 78
Therefore, √6048 = 78
So, the correct answer is: 78
-
A. -5
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B. None of these
-
C. 5
-
D. -2.5
Explanation
-
A. AB = A^tB^t
-
B. (AB)^t = B^tA^t
-
C. None of these
-
D. (AB)^t = A^tB^t
Explanation
Given A and B are square matrices of the same order:
(AB)^t = B^t * A^t
This property holds true for matrix transpose in multiplication.
The correct answer is (AB)^t = B^t * A^t.
-
A. {}
-
B. {10}
-
C. {100}
-
D. None of these
Explanation
The square root of any real number is never negative, so √x = -10 has no real solution.
Hence, the solution set is empty, written as { }.
-
A. None of these
-
B. 14
-
C. 7
-
D. 49
Explanation
If √x = 7, then squaring both sides gives x = 7² = 49.
So, the value is 49.
-
A. 8x^2
-
B. 16x^2
-
C. None of these
-
D. 16x
Explanation
To complete the square for x⁴ + 64, recognize that:
(x²)² + 2(x²)(8) + 8² = (x² + 8)²
So, the missing term to complete the square is:
2(x²)(8) = 16x²
-
A. {1}
-
B. {100}
-
C. {10}
-
D. None of these
Explanation
Given: √x = 10
Squaring both sides: (√x)² = 10² → x = 100
Solution set: {100}
✅ Correct: 0 |
❌ Wrong: 0 |
📊 Total Attempted: 0
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