Well that depends on the tablet you have, so the next question when you select tablet-to-tv would be "Which tablet do you have"? Because a Nexus 7 doesn't have any HDMI ports, so you'd have to get a Chromecast or something (too technical).
When you select computer to TV, it asks whether your computer has a port like this (this being a picture of a HDMI port.) I see no reason why they couldn't do the same for a tablet.
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Well that depends on the tablet you have, so the next question when you select tablet-to-tv would be "Which tablet do you have"? Because a Nexus 7 doesn't have any HDMI ports, so you'd have to get a Chromecast or something (too technical).
When you select computer to TV, it asks whether your computer has a port like this (this being a picture of a HDMI port.) I see no reason why they couldn't do the same for a tablet.
The HDMI on the nexus 7 2013 works with a MHL cable trough the microUSB port. The 2012 model doesn't have MHL.