QUES: Q: What do all commonly used video compression methods use?
A: Today, nearly all commonly used video compression methods (e.g., those in standards approved by the ITU-T or ISO) apply a discrete cosine transform (DCT) for spatial redundancy reduction.
Does the answer answer the question?

ANS: yes

QUES: Q: What is the second-most-common language in Melborne?
A: Over two-thirds of Melburnians speak only English at home (68.1%).
Does the answer answer the question?

ANS: no

QUES: Q: What percentage of Smartphone users use the youtube app?
A: In September 2012, YouTube launched its first app for the iPhone, following the decision to drop YouTube as one of the preloaded apps in the iPhone 5 and iOS 6 operating system.
Does the answer answer the question?

ANS: no

QUES: Q: Why did The Sun change the wording of the headline?
A: One of the paper's best known front pages, published on 4 May 1982, commemorated the torpedoing of the Argentine ship the General Belgrano by running the story under the headline "GOTCHA".
Does the answer answer the question?

ANS:
no