A student multiplied a number by 3/10 instead of 10/3. What is the percentage error in the calculation?
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How many numbers are there between 1 to 200 which are divisible by 3 but not by 7?
A solid copper sphere of radius 9 cm is melted and reformed into a wire of radius 1 mm. What will be the length of this wire? (Take π = 22/7)
What is the value of (4a2 - 9b2 )/(2a + 3b) is
The average of 44 consecutive odd numbers is 144.What is the largest number?
A man is running at the speed of 20 km/hr. What is time (in seconds) taken by man to cover one round of a circular garden of radius 350 metres?
A can do a work in 21 days and B in 42 days. If they work on it together for 7 days, then what fraction of work is left?
Simple interest on a sum for 12 months at the rate of 25% per annum is Rs 935.What is the value (in Rs) of sum?
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