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Byju's Answer
Standard VIII
Mathematics
Properties of Square Numbers
Given n =1 + ...
Question
Given n =1 + x and x is the product of four consecutive integers. Then n will be
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Solution
Let the
4
no be
a
;
(
a
+
1
)
;
(
a
+
2
)
;
(
a
+
3
)
As product of 4 consecutive interference is even
⇒
x is even
∴
1
+
x
i
s
o
d
d
x
=
a
(
a
+
1
)
(
a
+
2
)
(
a
+
3
)
=
a
4
+
6
a
3
+
11
a
2
+
6
a
⇒
n
=
1
+
x
=
a
4
+
6
a
3
+
11
a
2
+
6
a
+
1
=
(
a
2
+
3
a
+
1
)
2
∴
′
n
′
i
s
a
l
s
o
a
p
e
r
f
e
c
t
s
q
u
a
r
e
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Similar questions
Q.
Given
n
=
1
+
x
and x is the product of four consecutive integers. Then which of the following is true?
Q.
If
n
=
1
+
x
, where
x
is the product of four consecutive positive integers then which of the following is/are true:
A) n is odd
B) n is prime
C) n is a perfect square
Q.
Let n be a product of four consecutive positive integers then n is never a perfect square
Q.
Suppose the sum of n consecutive integers is x+(x+1) +(x+2) +(x+3)+...+(x+(n-1)) =1000, then which of the following cannot be true about the number of terms n?
Q.
Assertion :
(
n
+
3
)
!
(
n
−
1
)
!
is divisible by
24
(
n
ϵ
N
)
Reason: Product of any four consecutive integers is divisible by 4!
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