Question

21 Find the square root of 42.25 by division method.

22 Find the square root of 298116 by prime factorization method.

23 What number should be added to -5/7 to get -2/3 ?

24 Find the five rational between -2 and 5.

25 An unbiased die is thrown. What is the probability of getting:

a) An even number

b) An odd number.

26 Two unbiased coin are tossed simultaneously. Find the probability of getting ;

a) Two heads

b) At least one head

27 Study the following frequency distribution table and answer the questions given below:

Class interval age

(in years)

Numbers of person

15-20 12

20-25 20

25-30 42

30-35 20

35-40 6

a) What is the size of the class intervals?

b) Which class has the highest frequency?

28 How many natural numbers lie between 92

or 102

?

29 Write a Pythagorean triplet whose one number is 14 .

30 The student of class 8 of a school donated Rs 2401 in all , for prime minister National relief

fund. Each student donated as many rupees as the number of students in the class. Find the

number of students in the class.​

Answer 1

Answer:

I Jan no HD smfff gdsh ghjbvf FFS afgjx gghdvgph