Question
In how many different ways can 6 boys and 3 girls to be
seated in a row such that all the boys seated together and all the girls seated together?Solution
Number of ways in which boy and girls can be seated = 6! ×3! Total number of ways when boys are seating together and girls are seating together = 2! × 6! × 3!
- A person invested Rs. 16500 in the simple interest for 3 years at the rate of 19% per annum. If the interest received is Rs. 940Z, then find the value of Z...
- A person borrows money from a lender at a 16% p.a. simple interest. If he repaid Rs. 6,960 after 48 months to settle the loan, find the principal amount.
Anuj invested Rs. ‘x’ at simple interest of 15% p.a. and Anil invested Rs. (x + 500) at simple interest of 10% p.a. If at the end of 2nd year, sum o...
A sum is lent on compound interest for 2 years at 13% p.a. If the compound interest on the sum is Rs.4153.5, find the sum.
‘M’ invested Rs. 3600 for (t + 6) months, while ‘N’ invested Rs. 900 more than ‘M’ for (t - 1) months, in a business. If profit received by ...
Out of a total sum of ₹5,000, Danish invested one part at 12% simple interest per annum and the remaining part at 10% simple interest per annum. If th...
- The compound interest on a certain principal for 2 years at 7% per annum compounded annually is Rs. 289.80. What will be the simple interest for the same d...
Rs. 8000 is invested in scheme ‘A’ for 3 years and Rs. 4000 is invested in scheme ‘B’ for 2 years. Scheme ‘A’ offers simple interest of 6% p...
What is the difference between the simple interest earned on an investment of Rs. 16,200 for 5.5 years at an annual interest rate of 8%, and the total a...
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2500 after 5 years. If the same amount is investe...
Relevant for Exams:
