Number System
What is the least number to be subtracted from 696 to make it a perfect square?

20
1
71
16

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Number System
A man engaged a servant on the condition that he would pay him Rs.900 and a uniform after one year service. He served only for 9 months and received uniform and Rs.650, find the price of the uniform?

Rs.100
Rs.80
Rs.85
Rs.90

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Number System
The difference between a two-digit number and the number obtained by interchanging its two digits is 45. The sum of the digit of the number is 9. What is the product of the two digits of the number?

13
12
14
15

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