Question
Find out the Wrong number in the following number
series. 2, 123, 204, 256, 278, 287Solution
2 + 112Â = 123 123 + 92Â = 204 204 + 72Â =Â 253 253 + 52Â = 278 278 + 32Â = 287
- A tree increases annually by one - fourth of its height. What will be the height of the tree after 3 years, if it stands today at 64 cm height? 
- The sum of two numbers is 801. When the larger number is divided by the smaller one, it results in a quotient of 41 with a remainder of 3. What is the diff...
- A number when divided by 19 leaves a remainder of 14. What will be the remainder when four times that number is divided by 19?
- 25% of a number exceeds 1/6th of the same number by 7. What is the number? 
- The value of 
- A waiter income consist of his salary and tips. During one week his tips were 4/5 of his salary. What portion of his income came from tips? 
- A school is organizing a trip and needs transportation for 180 students. Each bus can carry 45 students. If the school rents 4 buses and 2 vans, with ea... 
- The sum of the digits of a two-digit number is 7. If 45 is subtracted from this number, the digits reverse their positions. What is the original number?
- There are balls of three colours: blue, green, and white. The number of green balls is 8 more than the average number of balls of each colour. The numbe... 
- If median is 6 more than the mean, then find the difference between mode and median.