What is the product of this by telescopic method?
$$\prod_{k=0}^{\infty} \biggl(1+ {\frac{1}{2^{2^k}}}\biggr)$$
My teacher gave me this question and said that this is easy only if it
strikes the minute you read it. But I'm still thinking. Help!
P.S. This question is to be attempted by telescopic method.
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