A survey of 120 high school students determined whether they used​ Instagram, Twitter, or Facebook. The provided information was determined.   70 used Instagram. 62 used Twitter. 80 used Facebook. 34 used Instagram and Twitter. 49 used Instagram and Facebook. 41 used Twitter and Facebook. 24 had all three features.       Complete parts ​a) through ​e).       Question content area bottom Part 1 ​a) How many of the students surveyed used only​ Instagram?

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