Question

The probability that a number selected from the numbers 4 to 250 is not divisible by 5 is:
(a)- 30/49
(b)- 150/250
(c)- 197/247
(d)-14/15​

Answer 1

Answer: Option (C): 197/247

Step-by-step explanation:

Probability= no. not divisible by 5/ total numbers

Total numbers between 4 to 250: 250-3= 247 ( -3 because 1, 2 and 3 is not included.)

Numbers divisible by 5 (it is easier to find no. divisible by 5):

5, 10, 15, 20....so on.

There are two no. divisible by 5 out of every 10 sets of total no.

So, 250/10×2 = numbers divisible by 5

25×2= 50

Numbers that are not divisible by 5: 247-50=197

∴Probability= 197/247

Hope this helps. :>