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Numpy Quiz

Quiz by Varun Patkar

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5 questions
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  • Q1
    Why is Numpy Faster than Lists?
    Lists use contiguous memory
    Numpy uses fixed types
    Lists has no typecheching
    Numpy disallows Broadcasting
    20s
  • Q2
    Give the output: a=np.array([1,2,3]) a.shape
    (,3)
    (3,1)
    (3,)
    (1,3)
    20s
  • Q3
    Which of these types of data types do not exist?
    float8
    int8
    int16
    float16
    20s
  • Q4
    d=np.array([[1,2,3,4,5,6,7],[8,9,10,11,12,13,14]]) What do you put in to extract [2,4,6]
    d[0,1:-1:2]
    d[0,0:-1:2]
    d[1,1:-1:2]
    d[0,1:-3:2]
    45s
  • Q5
    Which of the following code gives output as : [[1,5,5], [5,1,5], [5,5,1]]
    (5*np.ones((3,3)))-(4*np.identity((3,3)))
    (5*np.identity((3,3)))-(4*np.ones(3))
    (5*np.ones((3,3)))-(4*np.identity(3))
    (4*np.ones((3,3)))-(5*np.zeros(3))
    45s

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