Advertisements
Advertisements
If a, b, c and dare in continued proportion, then prove that
(a+ d)(b+ c)-(a+ c)(b+ d)= (b-c)2
Concept: undefined >> undefined
Draw an ogive for the following :
| Class Interval | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
| Frequency | 8 | 12 | 10 | 14 | 6 |
Concept: undefined >> undefined
Advertisements
Draw an ogive for the following :
| Class Interval | 100-150 | 150-200 | 200-250 | 250-300 | 300-350 | 350-400 |
| Frequency | 10 | 13 | 17 | 12 | 10 | 8 |
Concept: undefined >> undefined
Draw an ogive for the following :
| Class Interval | 10-19 | 20-29 | 30-39 | 40-49 | 50-59 |
| Frequency | 28 | 23 | 15 | 20 | 14 |
Concept: undefined >> undefined
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
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
