2
Q:

# Which of the following groups of alphabets should replace the blank spaces so that the group of alphabets, given in bold, follow a logical pattern from the preceding and the following group of alphabets?b w _ y z a,  d s t u v _ ,  _ o p q r e

 A) x, e, d B) x, c, f C) x, e, n D) x, c, d

Explanation:

$\inline b\, w\, \underline{x}\, y\, z, \: \: d\, s\, t\, u\, v\, \underline{c},\: \: \underline{f}\, o\, p\, q\, r\, e$

Q:

What is the number that should come in the place of question mark ?

1050    420    168     67.2     ?

 A) 19.11 B) 14.25 C) 10.752 D) 26.88

Explanation:

Given series follows the rule of

1050/2.5 = 420
420/2.5 = 168
168/2.5 = 67.2
so 67.2/2.5 = 26.88

Filed Under: Series - Verbal Reasoning - Mental Ability
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO

3 9
Q:

Find the missing number in the given series ?

15, 51, 216, 1100, ?, 46452

 A) 5660 B) 6560 C) 6750 D) 6630

Explanation:

Let first no. be "k" and multiple be "l"...start value of y with 3
then,
[(k x y) + {l x (l-1)}]
Thus, we get

15 x 3 + 3 x 2 = 51
51 x 4 + 4 x 3 = 216
216 x 5 + 5 x 4 = 1100
1100 x 6 + 6 x 5 = 6630
6630 x 7 + 7 x 6 = 46452

Therefore, the missing number is 6630.

Filed Under: Series - Verbal Reasoning - Mental Ability
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO

4 22
Q:

What is the next number of the following sequence ?

21, 77, 165, 285, ......

 A) 404 B) 415 C) 426 D) 437

Explanation:

21 = $\inline \fn_jvn \small 5^{2}-4$
77 = $\inline \fn_jvn \small 9^{2}-4$
165 = $\inline \fn_jvn \small 13^{2}-4$
285 = $\inline \fn_jvn \small 17^{2}-4$

5,9,13,17,21,(+4)...
In the same way next no. will be
$\inline \fn_jvn \small 21^{2}-4$ = 441 - 4 = 437

Filed Under: Series - Verbal Reasoning - Mental Ability
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO

4 32
Q:

Which fraction comes next in the sequence

$\inline \fn_jvn \frac{2}{3},\frac{1}{3},\frac{5}{27},\frac{7}{81},?$

 A) 1/27 B) 11/278 C) 9/48 D) 7/123

Explanation:

Clearly, the numerators of the fractions in the given sequence follow the series of 2, 3, 5, 7,... and the denominator follows $\inline \fn_jvn \small 3,3^{2},3^{3},3^{4},...$
Then, the next term in the given sequence is  $\inline \fn_jvn \small \frac{9}{3^{5}} = \frac{9}{243}$ = 1/27

Filed Under: Series - Verbal Reasoning - Mental Ability
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO

5 72
Q:

Find the missing term in the following series ?

10000, 11000, 9900, 10890, ?, 10781

 A) 10423 B) 9801 C) 10241 D) 9712

Explanation:

Clearly, alternatively we add and subtract 10% of a term to obtain the next term of the series.
Thus, 10000 + (10% of 10000)= 11000;
11000 - (10% of 11000) = 9900;
9900 + (10% of 9900)  = 10890;
10890 - (10% of 10890) = 9801.
9801 + (10% of 9801)  = 9801+980 = 10781.
So, missing term = 10890- (10% of 10890)= 9801.