Question

M.C.Q's (just to confirm the answers) .....:)

Answer 1

For the complex number z , z - (conjugate of z ) =

Answer 2

Purely Real , Purely Imaginary , Both of them , None of them

Answer 3

i've chosen purely imaginary

Answer 4

Thats true..

Answer 5

The area of square is 16 sq.cm . The length of diagonal of the square is ?
4rt2 , 6rt2 , 8rt2 , none

Answer 6

should be easy. find the side of the square.. apply pyth theorem and find the length of diagonal..

Answer 7

how to get the side ?

Answer 8

you are given the area.. A=side^2

Answer 9

Phythagoras theorem H^2 = P^2 + B^2

Answer 10

yup.. but first find the side.. A=16=side^2 ==> side=4cm.. yeah?

Answer 11

yes but we have a side and area ...but in pyth theorem we have perp.,hyp. and base :/

Answer 12

it is a square.. so all the sides are equal..

Answer 13

how to put these values in pyth theorem ?

Answer 14

H^2 = P^2 + B^2
= 4^4 + 4^2
=16+16
=32

==>H=sqrt32

Answer 15

4^2* in the second step..

Answer 16

A binary operation * on any non-empty set S is said to be commutative if ..
a*b=b*a , (a*b)*c=a*(b*c) , a*b=e=b*a , a*e=a=e*a

Answer 17

Post it as a different question..

Answer 18

1st one ??

Answer 19

e is identity where e=1

Answer 20

it is the first one..

Answer 21

i think its the first one coz it is the commutative

Answer 22

yup..
and no more questions in this post.. make another post.

Answer 23

last one!!

Answer 24

a new post please.. :)