alleryStart learning →A six-sided die is rolled while a penny is flipped. What is the chance of rolling a two and getting heads?
AOne in six
BOne in two
COne in twelve
DOne in eight
Answer & Solution
Correct answer: C. One in twelve
1. List the outcomes: six die faces times two coin faces gives 12 equally likely combinations.
2. Two of those 12 carry a die roll of two, so the chance of a two is 2/12, which is 1/6.
3. Six of those 12 carry heads, so the chance of heads is 6/12, which is 1/2.
4. The word and signals the product rule, so multiply: 1/6 times 1/2 equals 1/12.
5. Only one of the 12 listed outcomes is a two with heads, which confirms 1/12.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 12 "Mendel's Experiments and Heredity", section 12.1 Mendel's Experiments and the Laws of Probability_
Keep practising Mendel's Experiments and Heredity
Browse all Mendel's Experiments and Heredity questions for NCEA Level 2, or explore more Biology topics.
Related questions
Sort each clue by its dominance patternOrder the steps of crossing overKnock out the false allele claimsHow many genes contribute to eye colour in humans, at minimum?A single characteristic gives a phenotypic ratio whose parts total 16. What does that usuaIn shepherd's purse, seeds are ovoid only when both genes are homozygous recessive. What rTwo mice heterozygous at both the A and C genes are crossed. What phenotypic ratio of agouAgouti coat colour needs a dominant A allele, but pigment of any kind needs a dominant C a