All mammals are vertebrates. Some vertebrates are aquatic. No aquatic animals are terrestrial. Which of the following must be true?
Answer: D
Since some vertebrates are aquatic and no aquatic animals are terrestrial, some vertebrates (aquatic ones) are not terrestrial. Mammals are vertebrates, so some mammals may not be terrestrial.
Q.62Easy
A person walks 10 km north, then 5 km east, then 10 km south, then 5 km west. Where does he end up?
Answer: A
Walking 10 km N, then 10 km S cancels out vertically. Walking 5 km E, then 5 km W cancels out horizontally. The person returns to the starting point.
Q.63Easy
In a row of 8 people sitting left to right, P is 5th from the left. How many people are to the right of P?
Answer: B
If P is 5th from the left in a row of 8, then positions 6, 7, 8 are to the right. That's 3 people.
Q.64Easy
ELEPHANT : TRUNK :: KANGAROO : ?
Answer: A
As trunk is a distinctive feature/characteristic of elephant, pouch is a distinctive feature of kangaroo. The analogy is based on unique features.
Q.65Medium
Six friends A, B, C, D, E, F sit in a circle. A sits opposite to D. B is to the immediate right of A. Who is to the immediate left of D?
Answer: C
In a circle of 6: A opposite D means 3 positions apart. If B is right of A, and counting clockwise: A, B, ?, ?, ?, ?. D is opposite A. The person left of D (right side from D's perspective) is C.
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Q.66Easy
Complete the series: Z, Y, X, W, V, U, __, __
Answer: A
The series is in reverse alphabetical order, decreasing by 1 each time. After U comes T, then S.
Q.67Medium
In a puzzle, if 5 boxes contain balls numbered 1-5, and box A has an odd number, box B has a prime number, box C has a number divisible by 2, then which boxes definitely contain specific numbers?
Answer: D
Odd numbers: 1, 3, 5 (A could have any). Prime numbers: 2, 3, 5 (B could have any). Divisible by 2: 2, 4 (C could have any). Multiple assignments possible.
Q.68Easy
If CATS is coded as 3-1-20-19, then DOGS is coded as?
Answer: A
Each letter is replaced by its position in the alphabet: C=3, A=1, T=20, S=19. Similarly: D=4, O=15, G=7, S=19. Answer: 4-15-7-19.
Q.69Hard
In a seating arrangement, 6 people sit around a hexagonal table. M is 2 seats away from N (clockwise). K is opposite to M. Who sits between K and N (clockwise)?
Answer: B
We know M, N (2 seats away clockwise), and K (opposite M). But without knowing other people's positions or exact starting point, the person between K and N cannot be uniquely determined.
Q.70Medium
Some novels are thrilling. All thrillers are entertaining. No entertaining works are boring. Based on this, which statement is definitely FALSE?
Answer: C
From the statements: Some novels are thrilling → Some thrillers are entertaining (since all thrillers are entertaining) → Not boring. So some novels are not boring. Statement C (All novels are boring) is definitely FALSE.
Q.71Medium
Find the odd one out: 121, 144, 169, 196, 225, 289
Answer: C
121=11², 144=12², 169=13², 196=14², 225=15². These are consecutive perfect squares. 289=17², which breaks the consecutive sequence. 289 is the odd one.
Q.72Easy
In a race, Arjun finishes before Bhavna, and Bhavna finishes before Chaya. Devi finishes before Arjun. Who finishes last?
All professors are knowledgeable. Some knowledgeable people are not teachers. Which of the following must be true?
Answer: A
Professors ⊂ Knowledgeable. Some knowledgeable people are not teachers. Therefore, some of those non-teachers in the knowledgeable group could be professors. A must be true.
Q.74Medium
FLOWER is to BLOSSOM as DARK is to __?
Answer: B
FLOWER and BLOSSOM are synonyms (both mean to bloom/flourish). DARK and NIGHT are conceptually linked similarly (night is characterized by darkness, as blossom characterizes flower).
Q.75Easy
In a logic puzzle with 4 people and 4 attributes, if person A has attribute 1, person B doesn't have attribute 1, and persons C and D share attribute 1, then how many people have attribute 1?
Answer: C
Person A has attribute 1 (count: 1). B doesn't have it (count: 1). C and D both have it (count: 1 + 2 = 3). Total: 3 people have attribute 1.
Q.76Easy
If MATHEMATICS is coded as 13-1-20-8-5-13-1-20-9-3-19, how is LOGIC coded?
Answer: A
Each letter is coded by its position in alphabet. L=12, O=15, G=7, I=9, C=3.
Q.77Easy
A is the father of B. C is the daughter of B. D is the brother of B. What is D to C?
Answer: A
A is father of B, D is brother of B, C is daughter of B. So D is the brother of C's father, making D an uncle to C.
Q.78Medium
Pointing to a woman, Rajesh says 'She is the mother of my brother's only son.' How is the woman related to Rajesh?
Answer: B
Rajesh's brother's only son means Rajesh's nephew. The mother of Rajesh's nephew is Rajesh's brother's wife, making her Rajesh's sister-in-law.
Q.79Easy
From point A, I walk 5 km north, then 3 km east, then 5 km south, then 2 km west. Where am I relative to point A?
Answer: A
North 5, then south 5 cancels out. East 3, then west 2 = 1 km east net displacement.
Q.80Hard
Six people A, B, C, D, E, F sit around a circular table. A sits opposite D. B sits between A and F. C is not adjacent to A. E sits to the right of A. How many arrangements are possible?
Answer: B
With A opposite D, B between A and F, E to right of A, and C not adjacent to A, there are 2 valid arrangements satisfying all constraints.
