If `A={x,y,z,t}` then which of these is not true:
(a) `x in A`
(b) `{y,z}sub A`
(c) `t sub A`
(d) `w!in A`

Let A and B be two non-empty subsets of set X. If (A-B)U(B-A)=AUB then which of the following is incorrect? a) A sub B b) A sub(X-B) c) A=B( d) B sub A

If A={a,b,c,d} and B={w,xy,z} , then which of the following is a relation from set A to B? Given reason: (i) R_(1)={(a,w),(a,x),(a,y),(a,z)} (ii) R_(2)={(w,b),(z,c),(y,d)} (iii) R_(3)={(a,y),(b,y),(w,y),(d,y)} (iv) R_(4)={(b,z),(b,y),(c-z),(c,w)}

The distance of the point (x,y,z) from xy-plne is (A) x (B) |y| (C) z (D) |z|

If X=[[-x, -y], [z, t]] , then transpose of adjX is

A point (x,y,z) moves parallel to x axis. Which of the three variables x,y,z remains fixed? (A) x and y (B) y and z (C) z and x (D) none of these

If (log x)/(b-c)=(log y)/(c-a)=(log z)/(a-b), then which of the following is/are true? zyz=1 (b) x^(a)y^(b)z^(c)=1x^(b+c)y^(c+b)=1( d) xyz=x^(a)y^(b)z^(c)

If x+a=y+b+1=z+c then the value of [[x, (a+y), (a+x)], [y, (b+y), (b+y)], [z, (c+y), (c+z)]] is

If the length of the sub tangent is 9 and the length of the sub normal is 4 at (x, y) on y=f(x) then |y|=

if x , y , z , a n d w be the digits of a number beginning from the left , the number is x y z w (b) w z y x (c) x + 10 y + 100 z + 1000 w (d) 10^3x+10^2y+10 z+w