Logical Reasoning Flashcards

In a school, there are five teachers. A and B were teaching Hindi and English. C and B are teaching English and Geography. D and A are teaching Mathematics and Hindi. E and B are teaching History and French. Who among the teachers is teaching the maximum number of subjects?

Answer: B

Explanation: B teaches the maximum number of subjects : English, Hindi, French, Geography and History

The first two numbers are related to each other in some way. Find out the relationship and apply the same relationship to the third number to identify the fourth number. 923 : 329 :: 143 : ?

Answer: 341

Explanation: 923 is reversed to get 329 Similarly, we reverse 143 to get 341

The first two numbers are related to each other in some way. Find out the relationship and apply the same relationship to the third number to identify the fourth number. 2 : 3 :: 5 : ?

Answer: 7

Explanation: These are prime numbers in order. For your Knowledge: A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. Some prime numbers are 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71...

Six children A, B, C, D, E, and F were in a race and the results of the race were as follows: B finished the race before C but after A F finished the race after D and E D finished the race before E and after C Find the order in which the children finished the race (from first to last):

Answer: A, B, C, D, E and F

Explanation: The correct order is: 1st —> A 2nd —> B 3rd —> C 4th —> D 5th —> E 6th —> F

Choose the same relationship from given four choices as given in the original pair: Stairs : Lift

Answer: Walk : Drive

Explanation: One can walk up or down the stairs or take the lift to do the same thing. Same way one can either walk to the destination or drive.

B is the brother of D. M is the sister of B. K is the mother of M. R is the husband of K. How is D related to R?

Answer: Son or daughter

Explanation : B is the brother of D, therefore B is a male. M is the sister of B, so M is female and also the sister of D. Thus B, D, and M are all brothers and sisters. K is the mother of M, so K is also the mother of B and D. R is the husband of K, so K is the Father of B, D, and M. From the given information, the gender of D cannot be determined, so D is either the son or daughter of R.

Find the missing number: 4,9, 17, 35, 69, _____

Answer: 139

Explanation : The pattern is: (number) x 2 + 1, (obtained number) x 2 -1, (obtained number) x 2 + 1, (obtained number) x 2 - 1 and so on.

Pointing to a photograph, a woman says, "This man's son's sister is my mother-in-law." How is the woman's husband related to the man in the photograph?

Answer: Grandson

Explanation : Man's son's sister : Man's daughter So Man's daughter is the mother of the woman's husband. Thus, the woman's husband is the grandson. So the woman’s husband is the grandson of the man in the photograph.

Rohit is taller than Amit but shorter than Sushma. Kapil is taller than Preeti but shorter than Amit. Dinesh is taller than Kapil but shorter than Sushma. Who among them is the tallest?

Answer: Sushma

Explanation: Priti Note: Dinesh is taller than Kapil but shorter than Sushma. Thus Sushma is the tallest of all, but Dinesh's height with respect to Amit and Rohit is not known.

In a certain code '123' means 'soldiers are fit'; '345' means 'fit are healthy'; '61' means 'young soldier'. Which digit in the code means 'are'?

Answer: 2

Explanation: In the first and the second statements, the common word is 'fit' and the common code digit is 3. So 3 means fit. In the first and the third statements, the common word is 'soldier' and the common code digit is 1. So 1 means soldier. Now, in the first statement, the only remaining word is 'are' and the only remaining digit is 2. Thus in the first statement 2 means 'are'.

The first two words are related to each other in some way. Find out the relationship and apply the same relation ship to the third word to identify the fourth word. POT : TOP :: TRAP : ?

Answer: PART

Explanation: 'POT' is reversed to get 'TOP' 'TRAP' is reversed to get 'PART'