Q. In a survey conducted among the spectators of Indo- Australia match, 5% do not use twitter, facebook and instagram and 10% use all three. 20% use instagram and facebook, 25% use twitter and instagram, and 25% use both twitter and facebook. 55% use instagram, 50% use Facebook and 50% use Twitter.
If the total no of survey participants is 180, then the no of people who useonly twitter is

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Solution

The correct option is A 18
Total no of participants is 180 %
of people who use twitter only is 10%
So no of twitter only user is $10 % \times 180 =$ 18

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The correct option is A 18Total no of participants is 180 % of people who use twitter only is 10% So no of twitter only user is 10%×180= 18

The correct option is A 18
Total no of participants is 180 %
of people who use twitter only is 10%
So no of twitter only user is $10 % \times 180 =$ 18