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Maths Puzzle
Numerical Ability
the topic is solving equations by multiplying and dividing
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book Other Question
containing the points (3,-4) & (2,1)
The decibel level of sound is given by D= 10log ( I/10^−12), where I is the
sound intensity measured in watts per square meter. Find the
decibel level of a whisper at an intensity of 5.4 × 10-10 watts per