Question

Your friend Veer wants to participate in a 200m race. He can currently run that distance in 51 seconds and with each day of practice it takes him 2 seconds less. He wants to do in 31 seconds .

1. Which of the following terms are in AP for the given situation

a) 51,53,55…

 b) 51, 49, 47….

c) -51, -53, -55….

d) 51, 55, 59…

2. What is the minimum number of days he needs to practice till his goal is achieved

a) 10

b) 12

c) 11

d) 9

3. Which of the following term is not in the AP of the above given situation

a) 41

b) 30

c) 37

d) 39

4. If n^th term of an AP is given by a_n = 2n + 3 then common difference of an AP is

a) 2 

b) 3

c) 5

d) 1

5. The value of x, for which 2x, x+ 10, 3x + 2 are three consecutive terms of an AP

a) 6

b) -6

c) 18

d) -18

Answer 1

1. b

2. c

3. b

4. a

5. a

Answer 2

1. b) 51,49,47....

2. c) 11

3. b) 30

4. a) 2

5. a) 6