Question

not more than 3 beads appears in tossing three coin find the probability​

Answer 1

So, since the probability of one coin flip being Heads is 1/2 (assuming a fair coin), the probability of 3 coins being Heads is (1/2)^3 or 1/8. The probability of Tails is exactly the same. So, 1/8 + 1/8 = 2/8 or 1/4.

Answer 2

Answer:

The possible outcomes are :

{HHH,TTT,HHT,HTH,THH,TTH,THT,HTT}

Number of total possible outcomes = 8

Number of favourable outcomes = 2 {i.e., TTT and HHH}

Probability of getting 3 heads and 3 tails P=

Number of favourable outcomes /Number of favourable outcomes

= 2/8 =1/4