Data Handling-Collection Organisation Data Exercise 22.1

RD Sharma Solutions Class 7 Mathematics Solutions for Data Handling-Collection Organisation Data Exercise 22.1 in Chapter 22 - Data Handling-Collection Organisation Data

Question 6 Data Handling-Collection Organisation Data Exercise 22.1

A die was thrown 25 times and following scores were obtained:

1 5 2 4 3

6 1 4 2 5

1 6 2 6 3

5 4 1 3 2

3 6 1 5 2

Prepare a frequency table of the scores.

Answer:

Required frequency table:

Score	Number of times
1	5
2	5
3	4
4	3
5	4
6	4

Video transcript

"hi guys welcome to lido q a video i am vinit your leader tutor bringing you this question on your screen a sum of rupees 9600 is invested for three years at ten percent per annum at compound interest what is the sum due at the end of first year so for number one principle is nine thousand 600 rate is 10 percent and time is 1 year therefore sum due at end of one year is given by principle into 1 plus r by 100 by t to 9 600 into 1 plus 10 by 100 to the power one so this is nine thousand six hundred into eleven by ten right so let us multiply nine thousand six hundred so 0 right 6 9 6 15 5 1. so rupees 10 560. that's our first answer now number two what is the sum due at the end of second year again for the second year principal will be the amount of first year r is is the same and time is again 1 year therefore amount due at the end of second year will be equal to 10 560 again into 11 by 10 right so 1 0 5 6 into 11 gives us so piece 1 1 6 1 6 let us look at the third one find the compound interest earned in two years right so compound interest earned in two years will be equal to amount at the end of two years right minus principle so this is equal to what is the amount at the end of two years eleven thousand six hundred and sixty so rupees eleven thousand six hundred and sixteen minus nine thousand six hundred so this is equal to rupees 2016 right it's not easy now let us look at number four find the difference between the answers in two and one and find the interest on this sum for one year so difference is equal to 11615 minus so 616 minus 10560 right so this will be equal to rupees 6 5 0 1 6 interest on rupees 1056 for one year is given by 1 0 5 6 into again 11 by 10 right so that will be equal to okay this is not uh into 11 by 10 but yeah so this is the amount so this will be equal to 1161.6 therefore interest is equal to rupees 5.6 and lastly number five compound interest for the third year so amount for the third year is equal to eleven thousand hundred 616 right into 11 by 10 that is equal to one thousand twelve thousand seven hundred and seventy seven point six therefore interest will be equal to interest will be equal to one two seven seven seven point six minus one one six one six that will be equal to one six one one one six one point six right guys so isn't that isn't that easy right so yeah if you have a doubt please leave a comment below do like the video and subscribe i'll see you in our next video until then bye guys keep learning keep flourishing"

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