Number System
In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient?

0
12
13
20

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Number System
A trader sells 40 metres of cloth for Rs 8,200 at a profit of Rs 25 per metre of cloth. How much profit will the trader earn on 40 metres of cloth ?

Rs. 600
Rs. 1,200
Rs. 1,000
Rs. 800

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Number System
In how many different ways can be the letters of the word PENCIL be arranged among themselves ?

640
510
720
860

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