One ticket is selected at random from 100 tickets numbered 00,01,02,0399. Suppose x is the sum of digits and y is the product of the digits. then the probability that x=9 and y=0 is?

N ( s ) = 100

Y = { 01 , 02 ,03 ,04 ,05 , 06 ,07 , 08 , 09 , 10 , 20 ,30 , 40 ,50 , 60 ,70 ,80 , 90 }

so

n ( y ) = 18

P ( y ) = n ( y ) / n ( S )

= 18 /100

= 9 /50

x = { 09 , 18 , 27 , 36 , 45 , 54 , 63 , 72 , 81 , 90 }

n ( x ) = 10

P ( x ) = n ( x ) / n ( s )

= 10 / 100

= 1 / 10

so probability of event x is 1/10 and event y is 9/50

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.