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:

In the folowing questions pickout the most sutiable substitute for the question mark?

6 : 222 :: 25 : ?

 A) 650 B) 15625 C) 15650 D) 15600

Explanation:

$\inline (6)^3+6=222$

$\inline Similarly, (25)^3+25=15625+25=15650$

17 554
Q:

Find the missing number in the series?

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

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

Explanation:

$\inline 2^3-2^2=8-4=4$

$\inline 3^3-3^2=27-9=18$

$\inline 4^3-4^2=64-16=48$

$\inline 5^3-5^2=125-25=100$

$\inline 6^3-6^2=216-36=180$

$\inline 7^3-7^2=343-49=294$

$\inline 8^3-8^2=512-64=448$

$\therefore ?=48$

29 1579
Q:

Find the missing number in the following series?

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

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

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

18 1378
Q:

Find the missing number in the following series?

2, 3, 10, 39, ?

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

Explanation:

$\inline 2\times 1+(1)^2\Rightarrow 3$

$\inline 3\times 2+(2)^2\Rightarrow 10$

$\inline 10\times 3+(3)^2\Rightarrow 39$

$\inline 39\times 4+(4)^2\Rightarrow 172$

9 600
Q:

Find the wrong number in the following series?

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

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

Explanation:

$\inline 1500-25\Rightarrow 1475$

$\inline 1475-27\Rightarrow 1448$

$\inline 1448-29\Rightarrow 1419$

$\inline 1419-31\Rightarrow 1388$

$\inline 1388-33\Rightarrow 1355$

$\inline 1355-35\Rightarrow 1320$

1389 is wrong one. It should be 1388.