Summarization help

Can someone explain to me exactly how you get to these answers from this question? Its a question from my Cisco Press CCNP flash cards.

What is the best summarization for:

10.0.152.0/21 10.0.160.0/21 10.0.168.0/21 10.0.176.0/21 10.0.184.0/22 10.0.188.0/22

I know the answers are 10.0.152.0/21 and 10.0.160.0/19, but I am a bit confused as to how you work out the problem to find these solutions, especially for the 10.0.160.0/19. Any help is appreciated.

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Posted 5 years ago by Michael in Cisco Certification

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