Number series is a progression or an ordered list of numbers governed by a pattern or rule. Numbers in a sequence are called terms. A sequence that continues indefinitely without terminating is referred to as infinite sequence, whereas a sequence with an end is known as finite sequence. Questions related to Number Series series questions can be solved by using Division. In this method, we will divide the term with some number to get the second term and second term with some number to get the third term and so on. On the basis of the result, we will find the next number in the series.
Some examples are:
Illustration : Find the missing term.
144, 72, 36, 18, ?
(A)12
(B) 9
(C) 6
(D) 3
Answer: (B)
Solution : 144/2 = 72, 72/2 = 36, 36/2 = 18, 18/2 = 9
Illustration :Find the missing number:
2187, 729, 243, 81, ?
(A). 27
(B). 31
(C). 33
(D). 25
Answer : (A)
Solution : Divide the first term 2187 by 3 to get second term 729. Divide 729 by 3 to get 243. Thus, dividing 81 by 3 to get 27 and that is the answer.
Illustration : Find the missing number.
30030, 15015, 5005, 1001, ?
(A) 141
(B) 143
(C) 145
(D) 147
Answer : (B)
Solution : In the given number series, every term is divided by the prime number.
30030/2 = 15015
15015/3 = 5005
5005/ 5 = 1001
1001/ 7 = 143
So, the answer is 143.
Find the term : 23328, 7776, ? , 864, 288 | |||
Right Option : D | |||
View Explanation |
Find the missing term : 2004, 1000, 496, 242, ? | |||
Right Option : A | |||
View Explanation |
Find the missing term. 10000, 5000, 1250,? | |||
Right Option : C | |||
View Explanation |
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.