Misc 16 - Chapter 8 Class 11 Sequences and Series
Last updated at April 16, 2024 by Teachoo
Miscellaneous
Misc 2
Misc 3
Misc 4 Important
Misc 5
Misc 6
Misc 7 Important
Misc 8
Misc 9
Misc 10 Important
Misc 11 (i) Important
Misc 11 (ii)
Misc 12 Important
Misc 13
Misc 14 Important
Misc 15 Important
Misc 16 You are here
Misc 17 Important
Misc 18 Important
Question 1 Deleted for CBSE Board 2024 Exams
Question 2 Deleted for CBSE Board 2024 Exams
Question 3 Important Deleted for CBSE Board 2024 Exams
Question 4 Deleted for CBSE Board 2024 Exams
Question 5 Deleted for CBSE Board 2024 Exams
Question 6 Important Deleted for CBSE Board 2024 Exams
Question 7 Deleted for CBSE Board 2024 Exams
Question 8 Deleted for CBSE Board 2024 Exams
Question 9 Important Deleted for CBSE Board 2024 Exams
Question 10 Deleted for CBSE Board 2024 Exams
Question 11 Important Deleted for CBSE Board 2024 Exams
Question 12 Deleted for CBSE Board 2024 Exams
Question 13 Important Deleted for CBSE Board 2024 Exams
Question 14 Deleted for CBSE Board 2024 Exams
Miscellaneous
Last updated at April 16, 2024 by Teachoo
Misc 16 A man deposited Rs 10000 in a bank at the rate of 5% simple interest annually. Find the amount in 15th year since he deposited the amount and also calculate the total amount after 20 years In simple interest, the interest remains same in all year. Interest per year = 10000 5% = 500 Hence, Amount in 1st year = 10000 Amount in 2nd year = Amount in 1st year + Interest = 10000 + 500 = 10500 Amount in 3rd year = Amount in 2nd year + Interest = 10500 + 500 = 11000 Hence, our series becomes 10000, 10500, 11000, . This is an AP where a = 10000 & d = 10500 10000 = 500 We need to find amount in 15th year, i.e. we need to find nth term for n = 15 Amount in 15th year = a + (n 1)d = 10000 + (15 1)500 = 10000 + 14(500) = 10000 + 7000 = 17000 Thus, amount in 15th year is Rs. 17000 Also, we need to find total amount after 20 years i.e. we need to calculate an for n = 21 Amount after 20 years = an = a + (n 1)d = 10000 + (21 1)500 = 10000 + 20(500) = 10000 + 10000 = 20000 Thus, amount in 20th year is Rs. 20,000