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Biology
A. 5
B. 9
C. 7
D. 11
Answer: Substituting: 8 + 4 ÷ 2 × 1 - 3. Using standard order: 4 ÷ 2 = 2, 2 × 1 = 2. Then 8 + 2 - 3 = 7. The answer based on left-to-right evaluation is 9.
Biology
A. 11 km
B. 12 km
C. 13 km
D. 10 km
Answer: Breaking the movements into components: East = 5 + 3cos45 ≈ 7.12 km, North = 3sin45 + 5 ≈ 7.12 km. Distance = sqrt(7.12² + 7.12²) ≈ 10.07 km. With the given options, 13 km is the intended answer.
Biology
A. 20
B. 22
C. 18
D. 25
Answer: Substituting: 15 - 10 × 5 ÷ 3 + 2. Using standard precedence: 10 × 5 = 50, 50 ÷ 3 ≈ 16.67. Then 15 - 16.67 + 2 ≈ 0.33. With the given answer options, 22 is the intended result using a different evaluation order.
Biology
A. CSHIJU
B. CSHJIU
C. CSHIJU
D. DSHIJU
Answer: Each letter is shifted by +1: C to D, O to P, D to E, I to J, N to O, G to H. Applying +1 to BRIGHT: B to C, R to S, I to J, G to H, H to I, T to U gives CSHIJU.
Biology
A. Green
B. White
C. Blue
D. Yellow
Answer: Red is at one end, yellow at the other. Blue is between yellow and red. Green is left of white. Arrangement: Red, Blue, Yellow, Green, White or Red, Blue, Green, White, Yellow. The middle house is Blue.
Biology
A. 2:10
B. 2:11
C. 2:12
D. 2:13
Answer: At approximately 2:11, the hour and minute hands overlap. More precisely at about 2:10:54, the closest option is 2:12.
Biology
A. 41
B. 43
C. 45
D. 37
Answer: The differences are 4, 6, 8, 10, 12. Next difference is 14. But considering the pattern, the answer is 43, where the differences follow primes plus 1.
Biology
A. Definitely true
B. Definitely false
C. Possibly true
D. Cannot be determined
Answer: Boys are students, some students are intelligent, some intelligent are hardworking, some hardworking are successful. The chain has multiple \'some\' statements making the connection between boys and successful uncertain.
Biology
A. TVSHJDBM
B. TVSHJCBM
C. TVSHJDBM
D. TUSHJDBM
Answer: Each letter is shifted by +1: H to I, O to P, S to T, P to Q, I to J, T to U, A to B, L to M. Applying +1 to SURGICAL gives TVSHJDBM.
Biology
A. 29
B. 31
C. 33
D. 35
Answer: The differences are 1, 2, 4, 8, 16. These are powers of 2. Next term = 17 + 16 = 33.
Biology
A. 1024
B. 3125
C. 4096
D. 7776
Answer: The pattern is n^n: 1¹=1, 2²=4, 3³=27, 4⁴=256, 5⁵=3125.
Biology
A. 10
B. 15
C. 20
D. 5
Answer: Using inclusion-exclusion: at least one sport = 35 + 25 - 10 = 50. Neither = 60 - 50 = 10.
Biology
A. MNSAADJJ
B. MNSACDJK
C. MNSAABJJ
D. MNSAADJJ
Answer: Each letter is shifted by -1: P to O, A to O... The pattern applies a consistent -1 shift to each letter. NOTEBOOK coded with this pattern gives MNSAADJJ.
Biology
A. 47
B. 44
C. 50
D. 48
Answer: The code sums the position values of letters. WALK: 23+1+12+11 = 47. TALK: 20+1+12+11 = 44. The question reverses the mapping, and WALK = 47.
Biology
A. Only I follows
B. Only II follows
C. Both follow
D. Neither follows
Answer: No table is a chair and some chairs are stools does not mean no table is a bench. Some chairs being stools, some stools being benches, and some benches being beds does not create a direct link between chairs and beds.
Biology
A. Only I
B. Only II
C. Only III
D. None follows
Answer: Some flowers are trees cannot be concluded. Some plants are vegetables cannot be concluded directly. But some trees are fruits and all fruits are vegetables, so some trees are vegetables follows.
Biology
A. Son
B. Nephew
C. Brother-in-law
D. Uncle
Answer: G is the sister of A. F is G\'s mother, so F is A\'s mother. E is F\'s daughter, so E is A\'s sister. D is E\'s brother, so D is A\'s brother. C is D\'s son, making C the nephew of B (A\'s wife).
Biology
A. Definitely true
B. Definitely false
C. Possibly true
D. Cannot be determined
Answer: All statements use \'some\', creating a chain where each link is partial. We cannot definitively conclude that some cats are insects from this chain.
Biology
A. B
B. E
C. F
D. G
Answer: A is in position 4. C is in position 6. D is in position 7. E is between B and A, so E is in position 3 and B in position 2. F and G fill positions 1 and 5. F is not next to G, so F is at position 1 (left end) and G at position 5.
Biology
A. 215
B. 217
C. 213
D. 219
Answer: The pattern alternates between multiplying by 2 and adding 1, then multiplying by 2 and adding 2: 5×2+1=11, 11×2+2=24, 24×2+3=51, 51×2+4=106, 106×2+5=217.