Students in an examination scored the following marks: 87,80,78,77,75,72,71,69,69,64,63,61 ,59,56,54,53. What was the median of the marks?​

step-by-step explanation:

step-by-step explanation:

ask goog great chance of finding the solution there

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right