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Mathematics

If two coins are tossed simultaneously, then the probability of getting atleast one head is

  1. 14\dfrac{1}{4}

  2. 12\dfrac{1}{2}

  3. 34\dfrac{3}{4}

  4. 1

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 atleast one head,

∴ A = {HH, HT, TH}.

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

∴ P(A) = 34\dfrac{3}{4}.

Hence, Option 3 is the correct option.

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