Which Number would come in place of the underline mark in the series. 3, 9, 21,

CuriousTab

CuriousTab

Home Aptitude

Discussion

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

Question
Which Number would come in place of the underline mark in the series. 3, 9, 21, ___ , 93
Options
A. 39
B. 45
C. 48
D. 51

Correct Answer

45

Explanation

First difference is 6 and second is 12. But if we take third as 18, then fourth difference will be 24. Then 93 can not be the last term.

So we have to take the difference as 6, 12, 24 and 48.

So Answer is 21+24 = 45

More questions

5. Statements: All the books are pencils. No pencil is eraser.

Conclusions:
1. All the pencils are books.
2. Some erasers are books.
3. No book is eraser.
4. Some books are erasers.
Options
A. Only (3)
B. Only (1) and (3)
C. Only (1) and (2)
D. Only (2) and (3)
E. Only (3) and (4)

7.
If the expression E < J ? H > Z'. 'H ? Y' and 'E > F' true. Which of the following conclusions will be definitely false?
Options
A. F < Y
B. Y > E
C. F < H
D. J ? Y

9.
Which two people cannot be a part of the same team?
Options
A. I and J
B. A and D
C. B and D
D. A and C

Comments

More in Verbal Reasoning: