Quantitative Aptitude
SQUARE ROOT AND CUBE ROOT MCQs
Square Roots, Cube Roots, Squares And Square Roots
Total Questions : 547
| Page 12 of 55 pages
Answer: Option C. -> 1764
:
C
The square of 42 should have 4 in the unit place (since the square of 2 is 4). 84 is too small to be square of 42. So, option 3 is correct.
Alternatively, 42 can be multiplied with itself to give the result.
:
C
The square of 42 should have 4 in the unit place (since the square of 2 is 4). 84 is too small to be square of 42. So, option 3 is correct.
Alternatively, 42 can be multiplied with itself to give the result.
Answer: Option B. -> False
:
B
((x2)2)2=x8 and (x3)3=x9
As we can see the square of a square of a square has a total power of 8 whereas the cube of a cube has a total power of 9. Thus, they are not equal.
:
B
((x2)2)2=x8 and (x3)3=x9
As we can see the square of a square of a square has a total power of 8 whereas the cube of a cube has a total power of 9. Thus, they are not equal.
Answer: Option B. -> 3
:
B
√√81
=√(√9×9)[∵9×9=92=81]
=√(9)[∵√92=9]=√(3×3)[∵3×3=32=9]=3
:
B
√√81
=√(√9×9)[∵9×9=92=81]
=√(9)[∵√92=9]=√(3×3)[∵3×3=32=9]=3
Answer: Option A. -> True
:
A
Square of a perfect cube is another perfect cube.
Let us take a number, n.
Its cube isn3. Square of this cube would be a perfect square given by (n3)2, which can also be written as(n2)3, a perfect cube.
:
A
Square of a perfect cube is another perfect cube.
Let us take a number, n.
Its cube isn3. Square of this cube would be a perfect square given by (n3)2, which can also be written as(n2)3, a perfect cube.
Answer: Option B. -> False
:
B
The square root is the inverse operation of a square.
A division is the inverse operation of multiplication, not of a square.
:
B
The square root is the inverse operation of a square.
A division is the inverse operation of multiplication, not of a square.
Answer: Option B. -> 1612
:
B
The square of a number will end in 1,if the digit in the units place is either1 or 9.
We know that12=1and92=81.
Among the given options, 161 has 1in its units place.
Hence,(161)2will have 1 in its unitsplace.
:
B
The square of a number will end in 1,if the digit in the units place is either1 or 9.
We know that12=1and92=81.
Among the given options, 161 has 1in its units place.
Hence,(161)2will have 1 in its unitsplace.
Answer: Option A. -> 12
Answer: Option A. -> 213444
Answer: Option D. -> 22.35
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