This exercise will help build your mental endurance and concentration. Pick any small number (lets say 3) and start doubling it in your mind.
3, 6, 12, 24, 48, 96, 192, 384 ....
How far can you get? Most people have a hard time once they get past 10 doublings. Practice until you can get up to 20 (the 20th doubling of 3 is 3,145,728).
3, 6, 12, 24, 48, 96, 192, 384 ....
How far can you get? Most people have a hard time once they get past 10 doublings. Practice until you can get up to 20 (the 20th doubling of 3 is 3,145,728).
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