Question
Identify the number that does NOT belong to the
following series. 3, 7, 12, 21, 57, 109, 276, 499Solution
Seies = 3, 7, 12, 21, 57, 109, 276, 499 Logic : the series is based on double difference Pattern: First difference is cube of numbers and it is in alternate places Second difference is of square of the numbers and it is in alternate places as well. Series of difference = 4, 5, 9, 36, 52, 167 , 223. Series of double difference = 1, 4, 27, 16, 115 , 56. Instead of 115, 125 will be placed. Â
The average age of six members of a family is 40 years. If the age of a guest is included, then the average age increases by 12.5%. What is the age (in ...
In an examination, the average marks obtained by the students is 40. After correcting the quantitative mistakes, the average of 50 students is reduced t...
The average weight of 8 persons is increased by 2.5 kg, when a person whose weight is 56 kg, is replaced by a new comer. Find the weight of new comer?
The average of six numbers is 8. When three new numbers are included in such a way that the first number is  twice the second and second number is thri...
Daksh bought 21 notebooks for Rs.1260 from shop A and 14 notebooks for Rs.1190 from shop B. What is the average price he paid per book?
- A writer completed an average of 120 pages per week for the first 10 weeks. In the next 5 weeks, he completed ‘x’ pages per week, so that his overall a...
Average weight of 12 nurses is 35 kg. If the weight of one more nurse is included, then average weight is increased by 2 kg. Find the weight of the newl...
The overall average score of a group of students is 70. The boys have an average of 60 and the girls average 85. By what percentage is the number of boy...
Average of four numbers is 16. Sum of smallest and largest number is 45. If difference between other two numbers is 1, then find the square of second sm...
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. ...