Find the next number in the series: 2, 3, 5, 8, 13, ? MCQ with Answer and Explanation

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Find the next number in the series: 2, 3, 5, 8, 13, ?

A. 18

B. 21

C. 24

D. 20

Answer: Option B

Solution (By JKSSB Mock Tests)

Each term is the sum of the previous two terms: 8+13=21.

This question belongs to: Reasoning Logical Reasoning

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Question #1

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In a certain code language, '253' means 'books are old', '546' means 'man is old' and '378' means 'buy good books'. What stands for 'are' in that code?

A. 5

B. 6

C. 2

D. 3

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Correct Answer: Option C

Explanation:
'old' common first two =5. 'books' first and third =3. Remaining in first 2 = are.

This question belongs to: Reasoning Logical Reasoning

Question #2

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Statement: All teachers are learned. Some learned are respected. Conclusions: I. All learned are teachers. II. Some teachers are respected.

A. Both follow

B. Neither follows

C. Only II follows

D. Only I follows

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Correct Answer: Option B

Explanation:
I reverses the universal statement and is invalid. II is not certain because respected learned may not include teachers.

This question belongs to: Reasoning Logical Reasoning

Question #3

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Find the next term: 8, 17, 36, 75, ?

A. 155

B. 154

C. 156

D. 157

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Correct Answer: Option B

Explanation:
8×2+1=17, 17×2+2=36, 36×2+3=75, 75×2+4=154.

This question belongs to: Reasoning Logical Reasoning

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