Number System
The sum of the two digits of a two-digit number is 15 and the difference between the two digits of the two digit number is 3. What is the product of the two digits of the two digit number ?

None of these
54
14
36

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

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Number System
A plot of 650 sq ft is available at the rate of Rs 6500 per sq ft. If 13% of the total cost of the plot is to be paid for booking the plot, what is the booking amount, (in Rs) ?

Rs. 519850
Rs. 507250
Rs. 536250
Rs. 549250

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Number System
In how many different ways can 7 boys and 3 girls sit in a row such that all the three girls do not sit together ?

3386880
3286880
3086880
3186880

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