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Draw an ogive for the following:
| Marks obtained | Less than 10 | Less than 20 | Less than 30 | Less than 40 | Less than 50 |
| No. of students | 8 | 22 | 48 | 60 | 75 |
Concept: undefined >> undefined
Draw an ogive for the following :
| Age in years | Less than 10 | Less than 20 | Less than 30 | Less than 40 | Less than 50 |
| No. of people | 0 | 17 | 42 | 67 | 100 |
Concept: undefined >> undefined
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Draw an ogive for the following :
| Marks (More than) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
| Cumulative Frequency | 100 | 87 | 65 | 55 | 42 | 36 | 31 | 21 | 18 | 7 | 0 |
Concept: undefined >> undefined
Draw an ogive for the following :
| Marks obtained | More than 10 | More than 20 | More than 30 | More than 40 | More than 50 |
| No. of students | 8 | 25 | 38 | 50 | 67 |
Concept: undefined >> undefined
If a, b, c are in continued proportion and a(b – c) = 2b, prove that: `a - c = (2(a + b))/a`.
Concept: undefined >> undefined
Find the arithmetic mean of –5 and 41.
Concept: undefined >> undefined
Find the arithmetic mean of 3x – 2y and 3x + 2y.
Concept: undefined >> undefined
Find the arithmetic mean of (m + n)2 and (m – n)2.
Concept: undefined >> undefined
What number must be added to each of the numbers 6, 15, 20 and 43 to make them proportional?
Concept: undefined >> undefined
What least number must be added to each of the numbers 5, 11, 19 and 37, so that they are in proportion?
Concept: undefined >> undefined
What quantity must be added to each term of the ratio a + b: a - b to make it equal to (a + b)2 : (a - b)2 ?
Concept: undefined >> undefined
Find the third proportional to:
x - y, x2 - y2
Concept: undefined >> undefined
Find the third proportional to:
`a/b + b/c, sqrt(a^2 + b^2)`.
Concept: undefined >> undefined
Find the fourth proportional to:
2xy, x2, y2
Concept: undefined >> undefined
Find the fourth proportional to:
x3 - y2, x4 + x2y2 + y4, x - y.
Concept: undefined >> undefined
Find the two numbers such that their mean proprtional is 24 and the third proportinal is 1,536.
Concept: undefined >> undefined
Using the properties of proportion, solve for x, given. `(x^4 + 1)/(2x^2) = (17)/(8)`.
Concept: undefined >> undefined
If b is the mean proportional between a and c, prove that `(a^2 - b^2 + c^2)/(a^-2 -b^-2 + c^-2)` = b4.
Concept: undefined >> undefined
If ax = by = cz, prove that
`x^2/(yz) + y^2/(zx) + z^2/(xy) = (bc)/a^2 + (ca)/b^2 + (ab)/c^2`.
Concept: undefined >> undefined
If a, b, c are in continued proportion, prove that a : c = (a2 + b2) : (b2 + c2).
Concept: undefined >> undefined
