Short tricks for DI

5 Posts  ·  12 Users
Hi guys ...sometimes while solving CAT question i find the the tedious calculation like (1.08)^5... does any body know any short trick to avoid this long calculationn and get an approximate answer?
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and yes , my problem is almost solved. Thanks to Ravi handa sir.
and for your information, we can us the formula rt + t*(t-1)*t^2/2.
Let's take the same example (1.08)^5
then put r= .05 and t= 5
The exact answer is 1.469 and the calculated value from above trick is 1.464 (quite close )

the only problem with this formula is it gives bad result for bigger values of r.
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@RahulPareek find 1.08^2
take the first 2 places after the decimal point and then square again
again, take the first 2 places after the decimal point and multiply by 1.08

see options for the closest value
this should work
MBA @ Kelley School of Business - Indiana University
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Correction:replace "the answer" by "the data"

Signature kaiku?Autograph bolna chahiye
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There's only one trick for DI.Read the question first and then the answer

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Hi guys ...sometimes while solving CAT question i find the the tedious calculation like (1.08)^5...
does any body know any short trick to avoid this long calculationn and get an approximate answer?

Write a comment
Write a comment...