Ex 1.3 Class 9 Maths Question 2.
You know that 17 = 0.142857¯. Can you predict what the decimal expansions of 27 , 137 , 47 , 57 , 67 are , without actually doing the long division? If so, how?
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Step-by-step explanation:
Given,
7
1
=0.
142857
.
Then,
7
2
=2×
7
1
=2×0.
142857
=0.
285714
7
3
=3×
7
1
=3×0.
142857
=0.
428571
7
4
=4×
7
1
=4×0.
142857
=0.
571428
7
5
=5×
7
1
=5×0.
142857
=0.
714285
7
6
=6×
7
1
=6×0.
142857
=0.
857142
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