Find the missing number.
The correct answer is 25. The logic: 4 * 9 = 36 i.e. square of 6. 9 * 16 = 144 i.e. square of 12 16 * x = 400 i.e. square of 20
The average weight of a group of five persons, A, B, C, D, and E is 62 kg. If another person K joins the group then the average weight of the group is d...
The average of n numbers is 62. If each of 55% of the numbers is increased by 18 and each of the remaining numbers is decreased by 12, then the n...
The mean of 50 observations was calculated as 75. It was later found that one of the observations was misread as 173 instead of 113. The correct mean is...
5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 55 and ratio of the 4th and the 5th number is 2:3. If difference between t...
In an examination the average marks of Rohit is 65. If he got 15 more marks in science and 25 more marks in maths then his average would have been 70. F...
The average of n numbers is 56. If each of 45% of the numbers is increased by 18 and each of the remaining numbers is decreased by 12, then the n...
The weight of two persons Kishan and Krishana are in the ratio 5:7. Krishan’s weight increased by 20% and the total weight of Kishan and Krishana ...
The average weight of five friends A, B, C, D and E is (x+8) years while the average weight of C and E is (x-8) kg. If the weight of another person F is...
Out of 4 numbers, the average of first 3 is 19 and last 3 is 20. If the last number is 21. Find the first number?
Average weight of Shikhar, Rohit and Virat is 72 kg. Hardik joins the group and the average now becomes 65 kg. If Dhoni whose weight is 8 kg more than ...
