A number, when divided by a divisor, leaves a remainder of 5 and when divided by twice the divisor, it leaves a remainder of 45. How do you find the divisor?

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45-5 = 40 is the divisior
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A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?
Deepak 2C2/7C2 = 1/21 ? Probability=Possible out come / Total out come. 5C2/7C2 = 10/21 5C2 -> 7C2 ->
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If increasing 20 by P percentage gives the same result as decreasing 60 by P percentage,What is P percentage of 70?
Increasing 20 by P% => x=20+20.P/100 Decreasing 60 by P% => y=60-60.P/100 Acoording to the question, x=y => 20+20.P/100=60-60.P/100 Solving we get P=50 So, P% of 70=50% of 70=35 So, answer is 35
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A number greater than 1 which is divisible by itself and 1. Example 3, 5, 7, 11 etc.
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