Logical Reasoning Challenge

If all roses are flowers and some flowers fade quickly, can we conclude that some roses fade quickly?

• All flowers fade quickly.

• No, we cannot conclude that some roses fade quickly.

• Some roses are not flowers.

• All roses fade quickly.

Answer explanation

The statement only tells us that some flowers fade quickly, but it does not specify that those flowers are roses. Therefore, we cannot conclude that some roses fade quickly.

A is the brother of B. C is the sister of A. D is the father of B. How is C related to D?

• C is the aunt of A.

• C is the cousin of B.

• C is the son of D.

• C is the daughter of D.

Answer explanation

C is the sister of A, and since D is the father of B, and A is B's brother, C must be D's daughter. Therefore, C is the daughter of D.

If 5 cats can catch 5 mice in 5 minutes, how many cats are needed to catch 100 mice in 50 minutes?

• 5 cats

• 15 cats

• 10 cats

• 20 cats

Answer explanation

If 5 cats catch 5 mice in 5 minutes, then 1 cat catches 1 mouse in 5 minutes. To catch 100 mice in 50 minutes, we need 10 cats (since 10 cats can catch 10 mice in 5 minutes, and thus 100 mice in 50 minutes).

What comes next in the series: A, C, E, G, ?

• H

• F

• I

• J

Answer explanation

The series consists of letters that skip one letter each time: A (skip B) C (skip D) E (skip F) G (skip H). Therefore, the next letter after G is I.

If the day before yesterday was Friday, what day will it be tomorrow?

• Wednesday

• Sunday

• Tuesday

• Monday

Answer explanation

If the day before yesterday was Friday, then yesterday was Saturday, and today is Sunday. Therefore, tomorrow will be Monday.

In a family of six members A, B, C, D, E, and F, A is the son of B. C is the daughter of B. D is the brother of A. E is the sister of C. F is the mother of A. How is D related to E?

• D is E's cousin.

• D is E's uncle.

• D is E's father.

• D is E's brother.

Answer explanation

D is the brother of A, and E is the sister of C. Since A and C are siblings, D and E are also siblings, making D E's brother.

Find the missing number in the series: 2, 4, 8, 16, ?, 64.

• 32

• 48

• 24

• 80

Answer explanation

The series doubles each time: 2, 4 (2x2), 8 (4x2), 16 (8x2), so the next number is 32 (16x2), followed by 64 (32x2). Thus, the missing number is 32.

If the first day of the month is a Sunday, what day of the week will the last day of the month be if it has 30 days?

• Tuesday

• Monday

• Saturday

• Wednesday

Answer explanation

If the month has 30 days and starts on a Sunday, the last day will be 30 - 1 = 29 days later. Counting from Sunday, 29 days later is a Monday (29 mod 7 = 1). Thus, the last day of the month is a Monday.

In a certain code, if 'CAT' is coded as '3120', how is 'DOG' coded?

• 4157

• 1234

• 5678

• 9101

Answer explanation

In the code, each letter corresponds to its position in the alphabet: C=3, A=1, T=20. For DOG, D=4, O=15, G=7. Thus, DOG is coded as '4157', matching the correct answer.

What is the next letter in the series: Z, Y, X, W, ?

• V

• T

• U

• A

Answer explanation

The series is in reverse alphabetical order: Z, Y, X, W. The next letter after W is V, making it the correct answer. The other options do not follow the sequence.