Question : A and B toss a fair coin each simultaneously 50 times. The probability that both of them will not get tail at the same toss is

(A) \left( \dfrac{3}{4}\right) ^{50}

(B) \left( \dfrac{2}{7}\right) ^{50}

(C) \left( \dfrac{1}{8}\right) ^{50}

(D) \left( \dfrac{7}{8}\right) ^{50}

Answer : option (A)

Solution :

*Related*