Question

any one describe me what is atleast ,atmost, exactly in probability class 9with an example

Answer 1

In probablity,

At least means the minimum number of conditions that should be met.

At most means the maximum number of conditions that should be met.

For eg, when you toss two coins simultaneously,

P(At least one head)=3/4. (HT,TH,HH)
This means that at least one head should be present in the answer

P(At most one head)=2/4. (HT,TH)
This means at most(at max) you can have one head only.