d)Cube of any odd number is even.
e) Opposite angles of a parallelogram are equal.
f)The solution of the equation y-6=1 is 7.
Answers
Answer:
d) not possible at all
e) yes
f) yes
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this is your answer
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hope it helps...
Step-by-step explanation:
CBSE NCERT Solutions for Class 8 Mathematics Chapter 1
Back of Chapter Questions
Exercise 1.1
1. Using appropriate properties find.
(i) −
2
3
×
3
5
+
5
2
−
3
5
×
1
6
(ii) 2
5
× (
−3
7
) −
1
6
×
3
2
+
1
14
×
2
5
Solution:
(i) −2
3
×
3
5
+
5
2
−
3
5
×
1
6
=
−2
3
×
3
5
−
3
5
×
1
6
+
5
2
(by commutativity)
=
2
3
× (
−3
5
) + (
−3
5
) ×
1
6
+
5
2
= (
−3
5
) (
2
3
+
1
6
) +
5
2
(by distributivity)
=
−3
5
×
5
6
+
5
2
=
−1
2
+
5
2
=
−1 + 5
2
=
4
2
= 2
Hence, −
2
3
×
3
5
+
5
2
−
3
5
×
1
6
= 2
(ii) 2
5
× (
−3
7
) −
1
6
×
3
2
+
1
14
×
2
5
=
2
5
× (
−3
7
) +
2
14
×
2
5
−
1
6
×
3
2
(by commutativity)
=
2
5
(
−3
7
+
1
14) −
1
6
×
3
2
(by distributivity)
=
2
5
(
−6 + 1
14 ) −
1
6
×
3
2
=
2
5
(
−5
14) −
1
2
×
1
2
=
2
5
×
(−5)
14 −
1
4