1.

If \(\frac{4}{{1 + \sqrt 2 + \sqrt 3 }} = a + b\sqrt 2 + c\sqrt 3 - d\sqrt 6\), where a, b, c, d are natural numbers, then the value of a + b + c + d is:

A. 1
B. 0
C. 2
D. 4
Answer» E.


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