a box contain 90 dics which are numbered 1 to 90. If one dice is drawn at random from the box find the probability that it bears. (i)two digit number. (ii)a perfect square number. (iii) a number divided by 5. plz replay fast
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3
Answer:
ANS1 81/90
ANS2 8/90
ANS 3 18/90
Step-by-step explanation:
ANS1
TWO DIGIT NUMBERS 90-9 = 81
THEREFORE POSSIBILITY 81/90
ANS2
PERFECT SQUARES
4,9,16,25,36,49,64,81
TOTAL 8 SQUARES
THEREFORE POSSIBILITY 8/90
ANS3
NUMBERS DIVIDED BY 5 UPTO 90
5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80, 85,90
TOTAL 18 NUMBERS
THEREFORE POSSIBILITY 18/90
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