Question

Rajeev and Sanjeev were feeling bored during the lockdown. They both created a number game.

Sanjeev prepared nine equilateral triangles and numbered them from 1 to 9. The numbers written

on the triangles also represented length of each side of the triangle (in cm).

Sanjeev arranged them in the form of a circle. He asked Raj eev to remove alternate triangles

starting from number 1, going clockwise, until only one triangle remained.

Question 1:

The triangles which Raj eev removed in the first round are, in order, numbered 1, 3, 5, 7, 9, ...

If Rajeev continues in the same manner, which numbered triangle will be left in the last?

a) 4

b) 2

c) 8

d) 6​

Answer 1

Answer:

c)8

Step-by-step explanation:

1,2,3,4,5,6,7,8,9,

1st time:*2*4*6*8*

2nd time:*******8*

remaining number 8