number analogy Practice Questions Answers Test with Solutions & More Shortcuts

Directions: In each of the following questions, there is a certain relationship between two given numbers on one side of (: :) and one number is given on another side of (: :) while another number is to be found the given alternatives, having the same relationship with this number as the number of the given pair bears. Choose the best and correct alternatives.

Question : 6

583 : 488 : : 293 : ?

a) 581

b) 291

c) 378

d) 487

Answer: (c)

As, Sum of digits of 583 = 5 + 8 + 3 = 16

and Sum of digits of 488 = 4 + 8 + 8

Similarly, Sum of digits of 293 = 2 + 9 + 3 = 14

and Sum of digits of "378" = 3 + 7 + 8 = 18

Here, difference of both sum of digits are (20 - 16) = (18 - 14) = 4.

Directions: In each of the following questions consists of a pair of numbers that have a common relationship to each other, followed by four other pairs of numbers given as alternatives. Select the pairs in which the numbers are similarly related as in the given pair from the alternatives.

Question : 7 [R.R.B. 2004]

12 : 144

a) 15 : 135

b) 22 : 164

c) 40 : 1600

d) 10 : 140

Answer: (c)

$$\text"The relationship is"$$ x : x2.

As, $$\text"12":\text"12"^2=\text"12" :\text"144".$$

$$\text" Similarly",\text"40":\text"40"^2=\text"40" :\text"1600"$$

Question : 8

5 : 35

a) 7 : 77

b) 9: 45

c) 11 : 55

d) 3 : 24

Answer: (a)

The first number is multiplied by the next prime number to obtain the second number.

Prime Numbers are 1, 3, 5, 7, 11, 13 .......

5 : 5 x 7 = 5 : 35

llly, 7 : 7 x 11 = 7 : 77.

Question : 9

7 : 24

a) 30 : 100

b) 23 : 72

c) 19 : 58

d) 11 : 43

Answer: (b)

$$\text"The relationship is"$$ x : (3x + 3)

As, $$\text"7":\text"(3 x 7 + 3)"=\text"7" :\text"24".$$

$$\text" Similarly",\text"23":\text"(3 x 23 + 3)"=\text"23" :\text"72"$$

Question : 10

27 : 9

a) 64 : 8

b) 125 : 5

c) 135 : 15

d) 729 : 81

Answer: (d)

$$\text"The relationship is " \text"x"^3 : \text"x"^2$$

$$\text"As, " \text"3"^3:\text"3"^2=\text"27" :\text"9".$$

$$\text" Similarly",\text"9"^3:\text"9"^2=\text"729" :\text"81".$$

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