Total number of balls in the bag = 5 + 8 + 2 + 3 = 18

Number of red or blue balls in the bag = 8 + 2 = 10

Probability = 1018 = 59

Let x = 4.333…… (1)

Multiply both sides by 10

10x = 43.333…… (2)

Subtract (1) from (2)

9x = 39

x = 399

Cost of 12 clips = Rs. 60

Profit = 20%

Selling Price of clips = CP x 120100 = 60 x 120100 = Rs. 72

Selling Price of 12 clips = Rs. 72

Rs. 72 is the selling price of 12 clips.

Rs. 60 will be the selling price of 1272 x 60 = 10 clips

Let the digits at hundreds, tens and unit place be x, y and z respectively.

The number will be 100x+10y+z

On reversing the positions, number will be 100z+10y+x

On subtracting, we get ((100x+10y+z) – (100z+10y+x)) = 99x-99z = 99(x-z)

The largest number dividing the difference is 99.

Factors of 385 = 5 * 7 * 11

Factors of 1001 = 7 * 11 *13

First prime number = 5