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Question

The sum of 0.¯¯¯6 and 0.¯¯¯7 is :-

A
1.¯¯¯3
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B
1.3
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C
1.¯¯¯4
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D
an irrational number
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Solution

The correct option is C 1.¯¯¯4
x=0.¯6
10x=6.¯6
10x=6+.¯6
10x=6+x
9x=6
x=69=23
y=0.¯7
10y=7.¯7
10y=7+.¯7
10y=7+y
9y=7
y=79
y+x=79+23
=7+69=139
=1.444
=1.¯4.

1194335_1282338_ans_4cef2c7fe5fc40fa88a0ba584eab2c18.jpg

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