Question : In a showroom. the marked prices of various items are displayed in such a manner that after giving a 10% discount to the customers, the owner of the showroom earns a profit of 20%. What is the ratio of the marked price and cost price of each item?

Option 1: 3 : 4

Option 2: 4 : 3

Option 3: 5 : 2

Option 4: 2 : 5

Question : Which of the following metal salts is responsible for permanent hardness in water?

Option 1: KCl

Option 2: Nacl

Option 3: Ca(HCO₃)₂

Option 4: CaCl₂

Question : Directions: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
_ab _ b _ bc _ ca _

Option 1: accbb

Option 2: abcca

Option 3: cacab

Option 4: abacb

Question : Directions: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
_ cb _ ca _ bacb _ ca _ bac_ d

Option 1: badddb

Option 2: bbbddd

Option 3: addddb

Option 4: addbbb

Question : Directions: Four number-pairs have been given, out of which three are alike in some manner and one is different. Select a different one.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – operations on 13 such as adding/subtracting/multiplying etc, to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
17 : 82
31 : 158
19 : 92
47 : 232

Option 1: 31 : 158

Option 2: 47 : 232

Option 3: 17 : 82

Option 4: 19 : 92