Ismail started a chess club in his school. In the first week he recruited two members for the club. From the second week, each new member recruited in the previous week recruited two new members each. How many members are there in the club after 5 weeks including Ismail?
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Total 3 members,
Now each recruited 2 new members,
Total members in 2 week = 9
Next week each each will recruit 2 members by this pattern.
3rd week - 27
4th week - 27×3 = 81
5th week = 81*3 = 243 members
That's the answer.
1st week -3
2nd week- 2*2=4
3rd= 4*2=8
4th= 8*2=16
5th= 16*2=32
Total= 32+16+8+4+3=63ppl