Select the number-pair in which the two numbers are related in the same way as the numbers in the pair 12 : 144 :: 15 : ?
The relationship is square: $12^2$ = 144. Therefore, $15^2$ = 225.
In a class of 45 students, Rohan ranks 15th from the top. What is his rank from the bottom?
Rank from bottom = (Total students - Rank from top) + 1 = (45 - 15) + 1 = 31st.
Select the correct option that indicates the arrangement of the following words in the order in which they appear in an English dictionary:
1. Network
2. Networking
3. Netizen
4. Netball
5. Networth
Dictionary order: Netball (4) -> Netizen (3) -> Network (1) -> Networking (2) -> Networth (5).
Identify the number that does NOT belong to the following series: 3, 7, 15, 31, 64, 127
Pattern is (x * 2) + 1: 3*2+1=7, 7*2+1=15, 15*2+1=31, 31*2+1=63. So 64 is incorrect (should be 63).
Statements:
1. All apples are fruits.
2. All fruits are healthy.
Conclusion:
I. All apples are healthy.
II. Some healthy things are apples.
All apples -> fruits -> healthy implies all apples are healthy (I follows) and some healthy items are apples (II follows).