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Mathematics

Lakshmi tosses two coins simultaneously. The probability that she gets atmost one head is

  1. 1

  2. 34\dfrac{3}{4}

  3. 12\dfrac{1}{2}

  4. 17\dfrac{1}{7}

Probability

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Answer

When two different coins are tossed simultaneously, then sample space = {HH, HT, TH, TT}. It consist of 4 equally likely outcomes.

Total number of possible outcomes = 4.

Let A be the event of getting atmost one head,

∴ A = {TT, HT, TH}.

Hence, the no. of favourable outcomes to event A = 3.

∴ P(A) = 34\dfrac{3}{4}.

Hence, Option 2 is the correct option.

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