SSC CHSL2019General Intelligence & ReasoningPage 2 of 2

SSC CHSL Tier 1 2019 General Intelligence & Reasoning Questions with Solutions

Questions from every shift of the year, grouped by section. Questions 51–54 of 54, each with the correct answer and a step-by-step explanation.

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Answers + explanations
51General Intelligence & Reasoning
In a code language, 'CERTAIN' is written as 'SVIGZRM'. How will 'CLIMATE' be written as in that language?
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Answer: (A) XORNZGV

Explanation

The coding scheme matches each letter to its opposite letter in the English alphabet, such that the sum of the positional values of the original letter and its coded letter is 27.

Applying this pattern to CLIMATE: C is 3rd, opposite is 24th letter, which is X. L is 12th, opposite is 15th letter, which is O. I is 9th, opposite is 18th letter, which is R. M is 13th, opposite is 14th letter, which is N. A is 1st, opposite is 26th letter, which is Z. T is 20th, opposite is 7th letter, which is G. E is 5th, opposite is 22nd letter, which is V.

Combining these letters gives XORNZGV.

52General Intelligence & Reasoning
Which number will replace the question mark (?) in the following series? 89, 90, 82, 109, 45?
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Answer: (C) 170

Explanation

The series follows a pattern of alternating addition and subtraction of cubes of consecutive natural numbers.

The differences between consecutive terms are calculated as follows:

90 - 89 = +1 = +1³

82 - 90 = -8 = -2³

109 - 82 = +27 = +3³

45 - 109 = -64 = -4³

Following this sequence, the next difference must be +5³, which equals +125.

Adding 125 to the fifth term yields the next number in the series:

45 + 125 = 170

53General Intelligence & Reasoning
Select the word-pair in which the two words are related in the same way as are the two words in the following word-pair. Myopic: Farsighted
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Answer: (A) Famous: Obscure

Explanation

The relationship between the words in the given pair Myopic and Farsighted is that of antonyms, as myopic refers to being nearsighted or lacking foresight, whereas farsighted refers to being able to see distant objects clearly or having foresight. Similarly, famous and obscure are antonyms, where famous means widely known and obscure means relatively unknown or unnoticed.

54General Intelligence & Reasoning
Select the set in which the numbers are related in the same way as are the numbers of the following set. (15, 102, 313)
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Answer: (A) (11, 74, 229)

Explanation

Let the numbers in the set be represented as (a, b, c).

The relationship between the numbers in the set is defined by the formulas: b = 7a - 3 c = 3b + 7

For the given set (15, 102, 313): b = 7 × 15 - 3 = 105 - 3 = 102 c = 3 × 102 + 7 = 306 + 7 = 313

For the set (11, 74, 229): b = 7 × 11 - 3 = 77 - 3 = 74 c = 3 × 74 + 7 = 222 + 7 = 229

Answer key

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  1. 51A
  2. 52C
  3. 53A
  4. 54A

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