Advertisements
Advertisements
Question
Choose the correct answer from the given options :
The mean proportional between `(1)/(2)` and 128 is
Options
64
32
16
8
Advertisements
Solution
The mean proportional between `(1)/(2)` and 128 is
= `sqrt(1/2 xx 128)`
= `sqrt(64)`
= 8
APPEARS IN
RELATED QUESTIONS
If x + 5 is the mean proportional between x + 2 and x + 9; find the value of x.
If `a/b = c/d` prove that each of the given ratios is equal to
`(5a + 4c)/(5b + 4d)`
If a : b : : c : d, then prove that
2a+7b : 2a-7b = 2c+7d : 2c-7d
If p, q and r in continued proportion, then prove the following :
`"p"^2 - "q"^2 + "r"^2 = "q"^4 (1/"p"^2 - 1/"q"^2 - 1/"r"^2)`
Determine if the following ratio form a proportion:
25 cm : 1 m and Rs 40 : Rs 160
If Rs 760 is divided between A and B in the ratio 8 : 11, then B's share is
Choose the correct answer from the given options :
If x, 12, 8 and 32 are in proportion, then the value of x is
10 books is to 15 books as 3 books is to 15 books
Write the mean and extreme terms in the following ratios and check whether they are in proportion.
400 gm is to 50 gm and 25 rupees is to 625 rupees
Write True (T) or False (F) against the following statement:
8 : 9 : : 24 : 27
