The mean of x+2, x+3, x+4 and x-2 is:
Hello sir,In the explanation given,"15" is not included in multiples of 5.So the answer is marked as option (D).But I think that the answer is option (A) since 15 is also a multiple of 5 and is between 1 and 20.So,the number of favorable outcomes would be 10 which when divided by 20 gives 1/2.Requesting you to kindly verify this error. Thank you
Hello, i've marked the right answer and this has been marked wrong. Please Check,
Why isn't option 4 also the right answer? because concave mirrors are used for seeing the enlarged images of teeth, not convex