Question
Of 10 computer chips, 4 are defective. What is
the probability of selecting 3 without replacement, only one of which is defective?Solution
There are only 3 ways in which just one can be defective:
-
only the first is defective
-
only the second is defective
-
only the third is defective
According to the rule of multiplication,
Which substance is used to dissolve noble metals?
Which substance is commonly used as a thermometric material in thermometers due to its expansive properties under temperature changes?
Protons were discovered by
Which of the following is considered an antiknock compound?
The elements with atomic numbers 10, 18, 36, 54 are-
Which chemical compound is commonly used in baking to provide more volume and a lighter texture to baked goods?
Iron, Nickel and Cobalt are the examples of
Which of the following metals is the lightest in the periodic table of elements?
The chemical name of the Vitamin B6 is
Which of the following dyes is used for colouring Paper and typewriters?