The mean marks of 30 students in a class is 58.5. Later on it was found that 75 was wrongly recorded as 57. Find the correct them. December 26, 2021December 26, 2021 administrator A. 57.4B. 57.5C. 58.9D. 59.1 Share the Post Share the Post
Total area of the 64 small squares of aches board is 400cm2. There is 3cm wide border around the chess board. What is the length of each side of the chess board? December 26, 2021December 26, 2021 administrator A. 17cmB. 20cmC. 23cmD. 26cm Share the Post Share the Post
The average of 1st 3 of 4 numbers is 16 and of the last 3 are 15. If the sum of the first and the last number is 13. What is the last numbers? December 26, 2021December 26, 2021 administrator A. 8B. 6C. 5D. 2 Share the Post Share the Post