Explanation: The @ operator adds the two numbers: 7+8=15, 3+5=8, 9+2=11, 4+6=10.
Explanation: These are perfect squares: 2², 3², 4², 5², 6². The next is 7² = 49.
A Only I follows
B Only II follows
C Both follow
D Neither follows
Explanation: The partial chain from students to scholars and from learners to teachers cannot be definitively established.
A QVSQMF
B QVSQNF
C QVTQMF
D QVSQMF
Explanation: Each letter is shifted by +1: O to P, R to S, A to B, N to O, G to H, E to F. Applying +1 to PURPLE gives QVSQMF.
Explanation: Each term is multiplied by 3 and then 1 is added: 1×3+1=4, 4×3+1=13, 13×3+1=40, 40×3+1=121, 121×3+1=364.
A Definitely true
B Definitely false
C Possibly true
D Cannot be determined
Explanation: The conclusion that some birds have eight legs contradicts the established knowledge. Additionally, the chain does not support this conclusion.
Explanation: Each term is doubled: 6×2=12, 12×2=24, 24×2=48, 48×2=96, 96×2=192.
Explanation: Using position values with a pattern: S(19)+T(20)+A(1)+R(18)=58, with offset giving 41. For COMET: C(3)+O(15)+M(13)+E(5)+T(20)=56, and with the established coding pattern the answer is 45.
A Definitely true
B Definitely false
C Possibly true
D Cannot be determined
Explanation: The chain of \'some\' statements creates only partial overlaps at each step. We cannot definitively conclude that some cats are unhealthy.
Explanation: 16=4², 25=5², 36=6², 64=8² are all perfect squares. 48 is not a perfect square, making it the odd one out.
A Only I follows
B Only II follows
C Both follow
D Neither follows
Explanation: Some red things are beautiful and all beautiful things are precious, so some red things are precious (II follows). But the chain from roses to valuable has too many partial links (I doesn\'t follow).
A Definitely true
B Definitely false
C Possibly true
D Cannot be determined
Explanation: The chain from men to generous passes through multiple partial connections. We cannot definitively conclude that some men are generous.
A 15th
B 16th
C 17th
D 18th
Explanation: Reena was 10th from right, meaning 16th from left. After swapping, Meena is at Reena\'s old spot, which is 10th from right. The answer is 18th from right.
Explanation: Each term doubles. 64 times 2 equals 128.
A Only I follows
B Only II follows
C Both follow
D Neither follows
Explanation: All cats are animals and all animals are living beings, so some animals are living beings follows. But we cannot conclude some cats are plants.
A 0 km
B 15 km
C 20 km
D 35 km
Explanation: After walking North 15, East 20, South 15, West 20, the person returns to the starting point. Distance is 0 km.
Explanation: All except 49 are multiples of 7 that are not perfect squares. 49 equals 7 times 7, making it a perfect square.
A FSBTFS
B FSBSFT
C FTBTFS
D GSCTGT
Explanation: Each letter shifted by plus 1. ERASER becomes FSBTFS.
A Definitely true
B Definitely false
C Possibly true
D Cannot be determined
Explanation: All statements are \'some\' statements. The chain does not create a definite connection between pens and green.
Explanation: The pattern is a times b plus a squared: 2 times 3 plus 4 equals 10. 4 times 5 plus 16 equals 36. 6 times 7 plus 28 equals 70. 8 times 9 plus 64 equals 136. With the given pattern, 8 times 9 equals 146.