Divisible of 5 means unit place must have 5 (since 0 is not in the list). And thousands place will always be 2. This leaves us with 5 digits (3, 4, 6, 7, 8) to be filled in 2 places (2 _ _ 5). This can be done in 5P2 ways or 20 ways. So 20 numbers can be formed.
Which element gives hardness to stainless steel?
What is the chemical name of baking soda?
Among petroleum refinery products, which has the lowest boiling point?
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called:
Biofertilizers convert nitrogen to:
In the synthesis of aspirin (acetylsalicylic acid) from salicylic acid, which reagent is used?
What defines an ion?
Which gas is commonly used to artificially ripen green fruits?
_____ are a group of chemicals that influence cell division and shoot formation.
What is the chemical name for baking soda?
