Question

1. In the class interval 5-10, find the
(i) lower limit
(ii) upper limit
(iii) class mark
(iv) class size

2. A group of 20 students recorded their heights (in cm). The data received were as given below. What is the range?
150, 120, 112, 160, 155, 151, 158, 142, 148, 149, 161, 165, 140, 157, 156, 146, 148, 153, 138, 135.

3. A die is thrown once. Find the probability of getting a number (i) greater than 4. (ii) less than 1 (iii) an odd number

4. A class consists of 21 boys and 9 girls. A student is to be selected for social work. Find the probability that
(i) a girl is selected
(ii) a boy is selected

5. From a well shuffled deck of 52 playing cards, a card is selected at random. Find the probability of getting
(i) a black card
(ii) a black king
(iii) an ace
(iv) a card of diamond

Answer 1

Answer:  1] (ii) upper limit

2] 160 3] greater than 4.    4] (ii) a boy is selected   5] (i) a black card

Step-by-step explanation:

1. In the class interval 5-10, find the - upper limit

2. A group of 20 students recorded their heights (in cm). The data received were as given below. What is the range - 160

3. A die is thrown once. Find the probability of getting a number - greater than 4.

4] A class consists of 21 boys and 9 girls. A student is to be selected for social work. Find the probability that - a boy is selected

5. From a well shuffled deck of 52 playing cards, a card is selected at random. Find the probability of getting - a black card