Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2008-02-28 11:06:33

power man
Member
Registered: 2006-12-26
Posts: 160

exponent q

is there a quick way to find 2 to the 51st power without using a calculator other than paper and pencil???


I hate people who hate people.
most people make mistakes, butt not me! smile smile
why     is     it     when     you     are     writing     something     important     you     run     out       of        spa

Offline

#2 2008-02-28 11:22:53

JaneFairfax
Member
Registered: 2007-02-23
Posts: 6,868

Re: exponent q

You have

Square that

Square again

Keep on squaring

Until you get to

Now notice that 51 = 32 + 16 + 3. Hence

Offline

#3 2008-02-28 12:24:29

power man
Member
Registered: 2006-12-26
Posts: 160

Re: exponent q

cool thanks a bunch


I hate people who hate people.
most people make mistakes, butt not me! smile smile
why     is     it     when     you     are     writing     something     important     you     run     out       of        spa

Offline

#4 2008-02-28 16:25:21

Ricky
Moderator
Registered: 2005-12-04
Posts: 3,791

Re: exponent q

Just write your answer in binary:

100000...50 times....000000


"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

Offline

Board footer

Powered by FluxBB