Question

A box contains beads numbered 11 to 123 , find the probability that : a) it is a square number , b) multiple of 7

Answer 1

Answer:

i) 8/113

ii)16/113

Step-by-step explanation:

i)Square numbers from 11 to 123 = 16, 25, 36, 49, 64, 81, 100 and 121 

Total square number from 11 to 123 = 8

Total cards numbered from 11 to 123 = 113

⇒P(a square number) = 8/113

ii)Multiples of 7 from 11 to 123 = 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98,       105,112,119

Total multiples of 7 from 11 to 123 = 16

⇒ P(a multiple of 7) = 16/113