I purchsed a hair-dryer for ₹5,400 including 8% VAT.Find the price before VAT was added.

A shopkeeper buys 80 articles for ₹2,400 and sells them for a profit of 16%.Find the selling price of one article.

The resistance R=V/I where V= (100 pm5)V and I= (10 pm 0.2)A . Find the percentage error in R.

A bag contians 8 red and 5 white balls. Three balls are drawn at random. Find the probability that (i) all the three balls are white. (ii) all the three balls are red. (iii) one ball is red and two balls are white.

A call is connected across 250 V, 50 Hz supply and it draws a current of 2.5 A and consumes power of 400 W. Find the self inductance and power factor. Data : E_(rms) = 250 V, v = 50 Hz, I_(rms) = 2.5 A, P = 400 W, L = ?, cos phi = ?

A sum of ₹ 20,000 is invested by honey for 2 years at an interest of 8% compunded annually.Find thecoumpound Interest(C.I) and the amount she has to pay at the end of 2 year.

Go through the following statements: (i) a typical nucleosome contains 400 bp of DNA helix. (ii) The positively charged DNA is wrapped around the negatively charged histoned octamer to form a structure called nucleosome. (iii) Histones are rich in the basic amino acid residues asparagine ad valine (iv) The packaging of chromatin at higher level requires additional set of proteins that collectively are referred to as nonhistone chromosomal proteins. Find out the wrong statements:-