Study the given pattern carefully and select the number that can replace the question mark (?) in it.

28

45

22

20

36

?

64

81

16

This question was previously asked in
SSC MTS 2020 (Held On : 7 Oct 2021 Shift 2 ) Official Paper 8
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  1. 34
  2. 20
  3. 18
  4. 36

Answer (Detailed Solution Below)

Option 3 : 18
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Detailed Solution

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Given:

28

45

22

20

36

?

64

81

16

 

Here the pattern followed in each column is:

1st number - 3rd number = 2nd number

Column 1: 28, 20, 64

1st number - √3rd number

= 28 - √64

= 28 - 8

= 20 = 2nd number

Column 2: 45, 36, 81

1st number - √3rd number

= 45 - √81

= 45 - 9

= 36 = 2nd number

Similarly,

Column 3: 22, ?, 16

1st number - 3rd number

= 22 - 16

= 22 - 4

= 18 = 2nd number

Hence, “18” is correct answer.

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