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a, b and c are positive integers. If b equals the square roo
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Updated on: 30 Dec 2022, 10:54
Updated on: 30 Dec 2022, 10:54
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Question Stats:
40% (02:42) correct
59% (02:24) wrong based on 22 sessions
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a, b and c are positive integers. If b equals the square root of a, and if c equals the sum of a and b, which of the following could be the value of c?
Indicate all such values.
A. 21
B. 30
C. 45
D. 72
E. 100
F. 331
Kudos for correct solution.
Indicate all such values.
A. 21
B. 30
C. 45
D. 72
E. 100
F. 331
Kudos for correct solution.
Re: a, b and c are positive integers. If b equals the square roo
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04 Dec 2017, 12:42
04 Dec 2017, 12:42
1
Bunuel wrote:
a, b and c are positive integers. If b equals the square root of a, and if c equals the sum of a and b, which of the following could be the value of c?
Indicate all such values.
A. 21
B. 30
C. 45
D. 72
E. 100
F. 331
Indicate all such values.
A. 21
B. 30
C. 45
D. 72
E. 100
F. 331
Show: :: OA
B and D
Here
b = \(\sqrt{a}\)
or we can write as \(b^2 = a\)
Now c = a + b
or c = \(b^2\) + b
or c= b(b+1) ; now looking at the equation we need the value b as two consecutive integer then only the equation will satisfy.
Now looking at the option we find two options :-
30 as one possible option because 5 * 6 = 30 ; 5 and 6 are two consecutive integer
72 is another possible option because 8 * 9 = 72 ; 8 and 9 are two consecutive integer
a, b and c are positive integers. If b equals the square roo
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23 Nov 2018, 05:45
23 Nov 2018, 05:45
Expert Reply
a, b and c are positive integers. If b equals the square root of a, and if c equals the sum of a and b, which of the following could be the value of c?
Indicate all such values.
A. 21
B. 30
C. 45
D. 72
E. 100
F. 331
Indicate all such values.
A. 21
B. 30
C. 45
D. 72
E. 100
F. 331
