Question
Tahir is standing 2 steps to the left of a red mark and 3 steps to the right of a blue mark. He tosses a coin. If it comes up heads, he moves one step to the right; otherwise he moves one step to the left. He keeps doing this until he reaches one of the two marks, and then he stops. At which mark does he stop?
1. He stops after 21 coin tosses.
2. He obtains three more tails than heads.
1. He stops after 21 coin tosses.
2. He obtains three more tails than heads.
Answer: Option C
:
C
option (c)Statement A: We can find, there are 12 Tails and 9 Heads.After tosses he will reach at blue point. So statement A is sufficient.Statement B: 3 more Tails greater than Heads. So he will reach at blue point after tosses.So statement B is also sufficient.
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C
option (c)Statement A: We can find, there are 12 Tails and 9 Heads.After tosses he will reach at blue point. So statement A is sufficient.Statement B: 3 more Tails greater than Heads. So he will reach at blue point after tosses.So statement B is also sufficient.
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