REVISION ASSIGNMENT 02 ( 24.01.2018)

DASS AND BROWN WORLD SCHOOL

Class X                                                        Revision assignment 02

1. If the mean of the following frequency distribution is 65.6 , find the missing frequency f1 and f2 .

Class	10-30	30-50	50-70	70-90	90-110	110-130	Total
Frequency	5	8	F1	20	F2	2	50

Ans- 12,3

2 .If the median of the following frequency distribution is 32.5 , find the missing frequency f1 and f2 .

Class	0-10	10-20	20-30	30-40	40-50	50-60	60-70	Total
Frequency	F1	5	9	12	F2	3	2	40

Ans- 3,6

3.Construct a tangle to a circle of radius 4 cm from a point on the concentric circle of radius 6 cm and measure its length. Also , verify the measurement by actual calculation. Write the steps of constructions.

4.Construct an isosceles triangle whose base is 9 cm and altitude 5 cm . Construct another triangle whose sides are  of the corresponding sides of the first triangle.

5.All red face card are removed from a pack of playing cards. The remaining cards are well shuffled and then a card is drawn at random from them. Find the probability that the drawn card is i)a red card ii) a face card  iii) a card of clubs.

**************************24.01.2018**********************