If `-7/11=14/x` ,then `x=`
`(a) 11`
`(b) -11`
`(c) 22`
`(d) -22`

If the arithmetic mean of 7,\ 8,\ x ,\ 11 ,\ 14 is x , then x= (a) 9 (b) 9.5 (c) 10 (d) 10.5

8, 7, 11, 12, 14, 17, 17, 22, (.....) (a) 27 (b) 20 (c) 22 (d) 24

If the perimeter of a circle is equal to that of a square, then the ratio of their areas is (a) 13\ : 22 (b) 14\ : 11 (c) 22\ : 13 (d) 11\ : 14

The perimeter of a circle is equal to the perimeter of a square. Then, their areas are in the ratio (a) 4 : 1 (b) 11 : 7 (c) 14 : 11 (d) 22 : 7

If 4x+5y=83 and (3x)/(2y)=(21)/(22), then y-x=?( a) 3( b) 4 (c) 7 (d) 11

Q 11 to 22 (5A)

If (5+2sqrt(3))/(7+4sqrt(3))=a+bsqrt(3) , then a=-11 , b=-6 (b) a=-11 , b=6 (c) a=11 , b=-6 (d) a=6, b=11

If |x+2|lt=9 then x in (-7, 11) b. x in [-11 ,7] c. x in (-oo,7)uu(11 ,oo) d. x in (-oo,-7)uu[11 ,oo)

If pi is taken as 22//7 , the distance (in metres) covered by a wheel of diameter 35 cm, in one revolution, is (a) 2.2 (b) 1.1 (c) 9.625 (d) 96.25

If x real and y= (x^2-x+3)/(x+2) , then (A) yge1 (B) yge11 (C) yle-11 (D) -11ltylt1