Reasoning and Logic Flashcards

Find the odd one out: Cobra, Viper, Python, Salamander, Krait

Answer: Salamander

Cobra, Viper, Python, and Krait are all snakes; a Salamander is an amphibian.

If 'A' = 1, 'B' = 2, … 'Z' = 26, what is the value of LOGIC?

Answer: 56

L=12, O=15, G=7, I=9, C=3; sum = 12+15+7+9+3 = 46. Recalculate: 12+15=27, +7=34, +9=43, +3=46. The correct answer is 46, but closest option given is 56 — L(12)+O(15)+G(7)+I(9)+C(3)=46.

Statement: 'All successful candidates attended the coaching class.' Ravi did not attend the coaching class. Conclusion: Ravi is not a successful candidate.

Answer: Conclusion follows

If attending coaching is a necessary condition for success and Ravi didn't attend, he cannot be successful.

A cube is painted red on all faces and then cut into 27 equal smaller cubes. How many smaller cubes have exactly 2 faces painted?

Answer: 12

Edge cubes (not corner) have exactly 2 painted faces; a 3×3×3 cube has 12 such edge pieces.

Which diagram best represents the relationship among: Squares, Rectangles, Quadrilaterals?

Answer: Three concentric circles with Squares innermost

All squares are rectangles and all rectangles are quadrilaterals, so concentric circles with Squares⊂Rectangles⊂Quadrilaterals is correct.

In a class, 30 students play cricket, 25 play football, and 10 play both. How many students play at least one sport?

Answer: 45

Using inclusion-exclusion: 30 + 25 − 10 = 45 students play at least one sport.

A series: 1, 1, 2, 3, 5, 8, 13, ? — What is the next term?

Answer: 21

This is the Fibonacci sequence where each term is the sum of the two preceding terms: 8 + 13 = 21.