HARD
10th Tamil Nadu Board
IMPORTANT
Earn 100

Find the middle terms of an A.P. 9, 15, 21, 27, ……,183.

Important Questions on Numbers And Sequences

HARD
10th Tamil Nadu Board
IMPORTANT
Mathematics Standard 10>Chapter 2 - Numbers And Sequences>Exercise 2.5>Q 7
If nine times the ninth term is equal to the fifteen times fifteenth term, show that six times twenty fourth term is zero.
MEDIUM
10th Tamil Nadu Board
IMPORTANT
Mathematics Standard 10>Chapter 2 - Numbers And Sequences>Exercise 2.5>Q 8
If 3+k, 18-k, 5k+1 are in A.P., then find k.
HARD
10th Tamil Nadu Board
IMPORTANT
Mathematics Standard 10>Chapter 2 - Numbers And Sequences>Exercise 2.5>Q 9
Find x, y and z given that the numbers x, 10, y, 24, z are in A.P.
HARD
10th Tamil Nadu Board
IMPORTANT
Mathematics Standard 10>Chapter 2 - Numbers And Sequences>Exercise 2.5>Q 10
In a theatre, there are 20 seats in the front row and 30 rows were allotted. Each successive row contains two additional seats than its front row. How many seats are there in the last row?
HARD
10th Tamil Nadu Board
IMPORTANT
Mathematics Standard 10>Chapter 2 - Numbers And Sequences>Exercise 2.5>Q 11
The Sum of three consecutive terms that are in A.P. is 27 and their product is 288. Find the three terms.
HARD
10th Tamil Nadu Board
IMPORTANT
Mathematics Standard 10>Chapter 2 - Numbers And Sequences>Exercise 2.5>Q 12
The ratio of 6th and 8th  term of an A.P is 7:9. Find the ratio of 9th  term to 13th  term.
HARD
10th Tamil Nadu Board
IMPORTANT
Mathematics Standard 10>Chapter 2 - Numbers And Sequences>Exercise 2.5>Q 13
In a winter season let us take the temperature of Ooty from Monday to Friday to be in A.P. The sum of temperatures from Monday to Wednesday is 0°C and the sum of the temperatures from Wednesday to Friday is 18°C. Find the temperature on each of the five days.
HARD
10th Tamil Nadu Board
IMPORTANT
Mathematics Standard 10>Chapter 2 - Numbers And Sequences>Exercise 2.5>Q 14
Priya earned ₹15,000 in the first month. Thereafter her salary increased by ₹1500 per year. Her expenses are ₹13,000 during the first year and the expenses increases by ₹900 per year. If it takes n years for her to save ₹20,000 per month, then find the value of n.