10th Class Maths MCQ with Answers
In proportion a : b :: c: d, b and c are called.
Third proportional
Extremes
Means
None of these
Fourth proportional w in x:y::v:w
x/vy
vy/x
xyv
xy/v
Fourth proportional of 5,8,15 is…………..
24
40
20
120
If x:y::y:z then
xy=z2
x2y=z
xz=y2
x2z2=y2
Find x in proportion 4: x :: 5: 15:
4/3
75/4
12
3/4
If a: b = x : y , then invertendo property is……………………
a+b /b = x+y/y
b/a = y/x
a/a-b = x/x-y
a/x = b/y
Direct variation between a and b is expressed as:
a=b
a=1/b
a?b
a ?1/b
The third proportional of x and y is:
x/y
None of these
xy
y2/x
Third proportional of 6,12 is……………..
84
18
24
2
The fourth proportional w of x:y::v:w is…………………
xy/v
vy/x
xyv
x/vy
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