sumayya

what is the antonym of DISCRETE ? a. continuous b. highly developed c.illogically composed i have a confusion whether it is continuous or illogically composed

z^4-2z^2-3 =0 Number of real roots of z? the answer is 2.but i don't know how to solve

thanks :)

2+4+6+..........+100.find the sum in series? can somebody help me in finding the number of terms in this series..i know its a sequences of even number..so it can be 50..but generally the number of terms in a series confuses me..is there any special formula to find out the number of terms in a series...

http://www.ets.org/Media/Tests/GRE/pdf/GREmathPractice.pdf

thanks both of u :) ..i got it now

|m-3|= 5 |k+7| =15 what is the least possible value of (k-m) ? (A) 0 (B) 20 © -20 (D) -14 (E) -30 I got the answer as ©=-20 BUT in the book which i refer the answer is (E)=-30..i dont know whethr its some printing mistake..if smebody knows the answer pls help

thanks for helping :) i got this problem from a a book my friend was using..he had gone for some coaching ..i guess he got that book from there..

@ riyad... actually the answer is b^2 -2 but i dnt knw hw they got..if u knw..pls share

cn anybdy help me to solve this 1. if 3^ (x) + 3^( -x) = b ,then 9^(x) + 9^ (-x) is equal to ?