Question

In the second round, Sanjeev started counting with triangle numbered as 1 and eliminated every

third triangle, until only one triangle remained. Which of the following triangle will be left in the

end?

Triangle no.-

a) 1

b) 3

c) 7

d) 6​

Answer 1

Answer:

I think option ️ is correct

Step-by-step explanation:

thank you!!

Answer 2

The correct answer is written below:

Explanation:

• In the second round, Sanjeev started counting with triangle numbered as 1 and eliminated every third triangle, until only one triangle remained.
• The triangle will be left in the end is triangle no. 1.
• 1      2     3    4   5    6     7    8     9  
• Removed         1, 2, 4, 5, 7,…  
• Then, removed    1, 2        
• Then, removed    2
• 1  numbered triangle will be left in the last.
• Hence, the correct answer is option (a) i.e 1.