Find the wrong number in the series 7, 28, 63, 124, 215, 342, 511 28 124 215 342

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Verbal Reasoning ‣ Number Series See What Others Are Saying!

Question
Find the wrong number in the series 7, 28, 63, 124, 215, 342, 511
Options
A. 28
B. 124
C. 215
D. 342

Correct Answer

28

Explanation

Here the number follows the given rule

$2^{3} - 1, 3^{3} - 1, 4^{3} - 1, 5^{3} - 1, . . .$

But 28 has been given in problem series.

so 28 is wrong number.

Tags:

More questions

6. Arrange the words given below in a meaningful sequence.
1. Book 2. Pulp 3. Timber 4. Jungle 5. Paper
Options
A. 2, 5, 1, 4, 3
B. 3, 2, 5, 1, 4
C. 4, 3, 2, 5, 1
D. 5, 4, 3, 1, 2

7.
Statement
Power consumption is every family has been doubled during the last five years.
Conclusion
I. There is a lot of development in the society.
II. Power rates have became cheaper.
Options
A. if only Conclusion I follows
B. if only Conclusion II follows
C. if both the Conclusions I or II follow
D. if neither Conclusion I or II follow

8. If X + Y means X is the daughter of Y; X - Y means X is the brother of Y; X % Y means X is the father of Y and X x Y means X is the sister of Y. Which of the following means I is the niece of J?
Options
A. J - N % C x I
B. I x C - N % J
C. J + M x C % I
D. I x C + N - J

Comments

More in Verbal Reasoning: