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Part ACSIR NET June 2024ties-break-the-symmetry

Ties break the symmetry

An experiment consists of tossing four fair coins independently. The outcome of the experiment is considered favourable, if the number of heads is greater than the number of tails. The probability of a favourable outcome from a single experiment is

  1. A.12\tfrac{1}{2}
  2. B.316\tfrac{3}{16}
  3. C.516\tfrac{5}{16}✓ Correct
  4. D.34\tfrac{3}{4}

You have the answer. Trap Analysis is why the other three were written.

Not a worked solution repeated four times — the specific reasoning error each wrong option was built to reward, and why this one tests execution slip.

See pricing

50 are analysed free — try those first.

The trap it tests

Execution slip

The idea was right. The computation was not.

Drill statements like this

Last revised . Found a mistake? Tell us — corrections are the fastest thing we act on.

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