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If foci of the ellipse (x^(2))/(16) + (y...

If foci of the ellipse `(x^(2))/(16) + (y^(2))/(b^(2)) = 1` coincide with the foci of the hyperbola `(x^(2)/(144) - (y^(2))/(81)) = (1)/(25)`, then the value of `b^(2)` is -

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