Question
If the sign ‘×’ is interchanged with ‘÷’ and
‘–’ is interchanged with ‘+’, then what will be the value of the expression below? 225 × 15 ÷ 3 – 7 + 1Solution
The correct answer is D
Average of 4 positive integers is calculated as 45. It was later found that while calculating the average, someone mistakenly entered 28 instead of 36. ...
Average weight of all the people in a group is 66 kg. When two people of weight 72 kg and 84 kg left the group, average weight reduces by 1.2 kg. Find t...
The average age of a group of 10 students is 12 years. Two persons of age 15 years and 20 years, left the group and 2 persons of age 54 years and 101 ye...
- If the average of 19, 34, 67, 45, 28, and 'x' is 43, determine the value of 'x²'.
- The average of ‘x’ numbers is 20. If 65% of the numbers are decreased by 2 and the remaining numbers are increased by 5, then find the new average of t...
The average of 10 observations is 46. It was realized later that an observation was misread as 42 in place of 142. The correct average is:
The average age of a group of persons going for tour to Shimla is 22 years. 25 new persons with an average age of 10 years join the group and their aver...
- Average of 5 figures is 70. When two more figures are added with an average of 'x', the new average increases by 10%. Find the value of 'x'.
The average salary of all males and females in an office is Rs.16000 and the total number of females in the office is 16. If the average salaries of mal...
The average age of 15 children and their teacher's age are 12 years. If the teacher's age is excluded, the average reduces by 2. What is the teacher's age?
