Question

a) 97
b) 67
d) -67
3. The nth term an of the AP with first term a and the common difference d is
a) an=a+(n-1) b) an=a+(n+1) c) an=a-(n-1) d
d) an=a-(n+1) d
4. The 'n' value of the AP with a=7, d=3 and an=34 is
a) 9
b) 10
c) 34
d) 27
5. Which of the following is the formula for finding the class mark?
a) Upper class limit-lower class limit
b) upper class limit + lower class limit
2
2
c) upper class limit X lower class limit
d) upper class limit-lower class limit
6. Find the modal class from the table
Class interval
0-10
10-20
20-30
30-40
40-50
frequency
9
16
18
14
12
d) 10-20
d) 5x+7=0
a) 0-10
b) 20-30
c) 30-40
7. Which of the following is in the standard form of a quadratic equation?
a) 7x²+4x+6=0
b) 9x-8x²+4=0
c) 1-2x?+100=0
8. The sum of first 10 multiples of 15 is.
a) 165
b) 815
c) 720
9. From the given table how, many students have scored marks less than 20
Marks
0-10
10-20
20-30
d) 825
30-40
Number of students
8
5
4
3
a) 8
b) 5
c) 13
d) 9
10. The mean of the following data is.
Class interval
100-150
150-200
200-50
frequency
2
2
1
c) 175
d) 155
a) 165
b) 150
Answer the following questions
5X2M=10M
11. Find the mode of the given data.
Class interval
0-10
10-20
20-30
30-40
40-50
frequency
9
12
20
11
10
12. The sum of the 4th and 8th terms of an AP is 20 and the sum of the 6th and 10th terms is 40. Find the first three terms of the AP
13. Rohan's mother is 16 years older than him. The product of their ages 6 years from now will be 560, represent it in the form of
quadratic equation
14. A contract on construction job specifies a penalty for delay of completion beyond a certain date as follows: 2100 for the first day,
2150 for the second day, 2200 for the third day, etc., the penalty for each succeeding day being 250 more than for the preceding
day. How much money the contractor has to pay as penalty, if he has delayed the work by 20 days.
V Edit with WPS Office
15. The distribution below gives the monthly consumption of electricity of 68 consumers of a locality. Find the median of the data.
Monthly
consumption
65-85
85-105
105-125
125-145
145-165
65-185
185-205
Number of
consumers
4.
8
14
20
13
5
4
Answer the following
145151​

Answer 1

Answer:

16 + 9(n-1) = 7 + 9n

and

-4 + (-7)(n-1) = 3 - 7n