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Q:

Find the missing number in the series?

4, 18, ?, 100, 180, 294, 448

A) 48	B) 50
C) 58	D) 60

Answer & Explanation Answer: A) 48

Explanation:

Take a Look at this series :

$2^{3}$ - $2^{2}$ = 8 - 4 = 4

$3^{3}$ - $3^{2}$ = 27 - 9 = 18

$4^{3}$ - $4^{2}$ = 64 - 16 = 48

$5^{3}$ - $5^{2}$ = 125 - 25 = 100

$6^{3}$ - $6^{2}$ = 216 - 36 = 180

$7^{3}$ - $7^{2}$ = 343 - 49 = 294

$8^{3}$ - $8^{2}$ = 512 - 64 = 448

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Filed Under: Number Series

Q:

Find the missing number in the following series?

3, 5, 5, 19, 7, 41, 9, ?

A) 71	B) 61
C) 79	D) 69

Answer & Explanation Answer: A) 71

Explanation:

Fiest series : 3, 5, 7, 9

Second series : 5, 19, 41, ?

Difference of Second series are 14, 22, 30 etc

Next term is 41+30 i.e equal to 71

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Filed Under: Number Series

Q:

Find the missing number in the following series?

2, 3, 10, 39, ?, 885

A) 128	B) 156
C) 172	D) 189

Answer & Explanation Answer: C) 172

Explanation:

Take a Look at the below sereies

$2 \times 1 + (1^{2}) = 3$

$3 \times 2 + (2^{2}) = 10$

$10 \times 3 + (3^{2}) = 39$

$39 \times 4 + (4^{2}) = 172$

$172 \times 5 + (5^{2}) = 885$

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Filed Under: Number Series

Q:

Find the wrong number in the following series?

1500, 1475, 1448, 1419, 1389, 1355, 1320

A) 1475	B) 1419
C) 1389	D) 1355

Answer & Explanation Answer: C) 1389

Explanation:

Take a look at the below sereies :

1500 - 25 = 1475

1475 - 27 = 1448

1448 - 29 = 1419

1419 - 31 = 1388

1388 - 33 = 1355

1355 - 35 = 1320

It clearly shows 1389 is Wrong Number

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Filed Under: Number Series

Q:

Find the wrong number in the series.

1, 2, 6, 15, 31, 56, 91

A) 31	B) 15
C) 56	D) 91

Answer & Explanation Answer: D) 91

Explanation:

The difference of the two consecutive numbers are 1, 4, 9, 16, 25, 35.

This is clearly , $+ (1^{2}), + (2^{2}), + (3^{2}), + (4^{2}), + (5^{2}), + (6^{2})$

Here 35 is wrong, So our wrong number is 91

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Filed Under: Number Series

Q:

Which Number would come in place of the underline mark in the series.

3, 9, 21, ___ , 93

A) 39	B) 45
C) 48	D) 51

Answer & Explanation Answer: B) 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

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Filed Under: Number Series

Q:

In a certain code language , 'PROBLEM' is written as MPERLOB. How will 'PROBLEM' is written as MPERLOB. How will 'NUMBERS' be written in that code?

A) SNUREMB	B) SNRUBME
C) SNRUEMB	D) SNRUMEB

Answer & Explanation Answer: C) SNRUEMB

Explanation:

$\begin{matrix} 1 & 2 & 3 & 4 & 5 & 6 \\ P & R & O & B & L & E \end{matrix} \begin{matrix} 7 \\ M \end{matrix} \Rightarrow \begin{matrix} 7 & 1 & 6 & 2 & 5 & 3 \\ M & P & E & R & L & O \end{matrix} \begin{matrix} 4 \\ B \end{matrix}$

Similarly, $\begin{matrix} 1 & 2 & 3 & 4 & 5 & 6 \\ N & U & M & B & E & R \end{matrix} \begin{matrix} 7 \\ S \end{matrix} \Rightarrow \begin{matrix} 7 & 1 & 6 & 2 & 5 & 3 \\ S & N & R & U & E & M \end{matrix} \begin{matrix} 4 \\ B \end{matrix}$

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Filed Under: Coding and Decoding

Q:

There are two numbers such that the sum of twice the first number and thrice the second number is 300 and the sum of thrice the first number and twice the second number is 265. Which is the largest number ?

A) 24	B) 39
C) 85	D) 74

Answer & Explanation Answer: D) 74

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams
Job Role: Bank PO

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