Logical Reasoning and Puzzles Flashcards

If all Bloops are Razzles and all Razzles are Lazzles, which conclusion must be true?

Answer: All Bloops are Lazzles

Since Bloops→Razzles→Lazzles, all Bloops are Lazzles by transitivity.

In a row of people, Tom is 3rd from the left and 6th from the right. How many people are in the row?

Answer: 8

Position from left + position from right − 1 = total: 3 + 6 − 1 = 8.

A clock shows 3:15. What is the angle between the hour and minute hands?

Answer: 7.5°

At 3:15 the minute hand is at 90° and the hour hand is at 97.5°, giving a difference of 7.5°.

If FRIEND is coded as HUMJTK, how is CANDLE coded? (Each letter shifts the same amount.)

Answer: ECPFNG

Each letter is shifted +2: C→E, A→C, N→P, D→F, L→N, E→G, giving ECPFNG.

Five boxes are stacked. Red is above Blue, Green is above Red, Yellow is below Blue, and White is above Green. Which box is at the bottom?

Answer: Yellow

Order from top to bottom: White, Green, Red, Blue, Yellow — so Yellow is at the bottom.

A man walks 5 km north, then 3 km east, then 5 km south. How far is he from his starting point?

Answer: 3 km

The 5 km north and 5 km south cancel out, leaving only the 3 km east displacement.

Which number comes next in the series: 2, 6, 12, 20, 30, ?

Answer: 42

Differences are 4, 6, 8, 10, 12 (increasing by 2 each time), so 30 + 12 = 42.