Question
What was the most important cause of the invasion of
Ghazni Mahmud?Solution
The correct answer is B
The average of a set of 25 numbers is 98. For the first 14 numbers, the mean is 84, and for the last 8 numbers, the mean is 112. ...
The average marks obtained by a student in a certain number of tests is 36. His average increases by 2 when he scores 90 in his next test. Find the tota...
The average of 17 numbers is 48. The average of first 9 numbers is 45 and average of next 9 numbers is 52. If 9th number is excluded, then th...
The average of 10 numbers is 21.8. The average of the last four numbers is 15. If the average of the first five numbers is 23, then what is the value of...
The average marks of 12 students in an exam is (x + 10). If the average of the first six students is 50 and that of the remaining six is 70, find the va...
The average of five even numbers is 38. If we replace two of these even numbers, 88 and 92, with a single even number X, the new average decreases by 4....
The average mark obtained by 110 candidates in a certain examination is 45. If the average marks of passed candidates are 50 and that of the failed cand...
A set contains ten numbers. The average of the first six numbers is (x - 2), and the average of the last three numbers is (x + 3). The average of the en...
- What is the average of the squares of the first 19 natural numbers?
The average age of a group of 10 people is 50 years. If the oldest person leaves the group, the average age of the remaining group decreases by 2 years....
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