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 :
