Question

If a coin is so biased that head is thrice as likely to appear as tail, then the probability of head is

• A. $\frac{1}{4}$
• B. $\frac{1}{2}$
• C. $\frac{3}{4}$
• D. $\frac{1}{8}$

Answer 1

The correct option is C $\frac{3}{4}$

Let's say if we are obtaining tail $x$ times then head will come for $3x$ times.
so the probability of obtaining head is$=\frac{3}{4}$